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Stepping down as CEO of RescueTime

May 22

Wow, I’ve felt bad about neglecting my blog. Not guilty-bad (though there’s a bit of that too), but bad because I feel like I have a LOT of stuff I want to write about. I literally have 15 or so blog posts that are pretty much just titles and topic sentences that I’m eager to write.

This isn’t one of ‘em.

John Cook just wrote that I was leaving RescueTime, and I feel like it makes sense that I should talk about this a bit to clarify what’s going through my head. Though I have to admit that it’s tempting as hell to do what Alex Payne did– which is pretty much leave it at “I just quit Twitter and I’m doing something new“.

Leaving any job is a personal choice with a lot of factors. Leaving a company that you’ve founded and nurtured from idea to prototype to product to business can be downright agonizing. The product is your baby and the team and investors you built it with are your brothers-in-arms. You think about it so long and so constantly that it gets to be an addiction. Not in a BAD way, mind you. The years I’ve spent on RescueTime have been some of the best of my life.

So Why Leave a Good Thing?

This is the most common question I’m getting right now– “If things are going so well at RescueTime, why leave?”. I’ve asked myself that question a TON over the last few months as I’ve been considering this move. RescueTime is enjoying some pretty awesome growth (51% quarterly revenue growth on average over the last 4 quarters– solid!). Not to say that there aren’t daunting challenges ahead for RescueTime, but all of the graphs are moving up and to the right. So, why the heck would I leave on the cusp of profitability? My reasons are largely internal… I know, I know. “Seriously, Tony? The ‘it’s not you, it’s me’ breakup line?’”. Seriously. Leaving RescueTime is like breaking up with an awesome women who you know you could be happy with, but no longer believe is the right woman for you. I have a mess of specific thoughts, but they all boil down to the fact that I’m more excited about what could be next– and I’ve always been driven by the “Regret Minimization Framework”. Watch this short video below:

Jeff’s boss’s response? “This sounds like a good idea. But it sounds like a BETTER idea for someone who already doesn’t have a good job!” I clearly have a great job at a great/growing company. But there are new things that are happening in technology/business that I find too darn exciting to not dive in. I want to get uncomfortable again, and trade reliable growth for blue sky. Given the stage that RescueTime is in, I think this is a reasonable time to make that leap. We’ve got a growing company that’s providing a livelihood for a great team and that (eventually, I hope) will provide a great return for the investors who made their bet on RescueTime (including myself!).

What’s next for RescueTime?

RescueTime’s focus right now is to scale, get new customers, and grow. We’re pretty convinced the entire team could answer support requests and play checkers and we’d grow every month (a testement to the fact that we focused on scalable marketing). But the team is going to continue to rock on A/B testing, outreach to our growing collection of Fortune 500 customers, back-end scaling so the servers don’t melt (processing hundreds of thousands of man hours of attention data per day isn’t easy, folks!), and (of course) making the product a little bit better every day.

I’m going to keep working with RescueTime on a few initiatives, and I’ll always be a founder (and advisor for as long as the team thinks I’m useful). Don’t be surprised if I answer a support request from time to time or do some writing on the RescueTime blog.

What’s next for Me?

(second most popular question, behind the “Why?”) Short answer, I don’t know– and that’s exciting. Longer answer, I’m looking for early stage opportunities in a few markets that I find particularly interesting. I want an opportunity where I can be strategically involved (hacking on business models) and tactically involved (managing UX, doing PR/outreach, A/B testing, writing copy, slinging pixels and CSS). Upside is a must for me– I’m eager to have skin in the game as opposed to a steady paycheck (though some combination of both could be interesting). I’ve written a bit about how I think stock options for most employees are a bit of a sucker’s bet unless you’re getting in VERY early (it turns out the only way to get meaningful reward is to buy it with risk). But at the end of the day, I’m only partially motivated by upside. I’m more motivated by the opportunity to make a BIG impact, the autonomy to do stuff that I think is important, being in a “fast” environment, and being surrounded by people I respect and like. This seems theoretically possible at a larger company, but seems likelier the earlier stage you go on the spectrum. It might ultimately mean that I have to start something new.

High Five, RescueTeam

The team of hackers that work at RescueTime are breathtakingly good. With a small team, we’ve built and maintained a windows app, a mac app, a web app, and a monster data warehouse that processes hundreds of thousands of man hours of attention data per day, all with a hosting bill that any startup would envy. We’re adding 600-1000 new users and 15-30 new paying customers per day without a single marketing dollar and without any marketing effort. We’ve built a machine that we’re really damn proud of.

I read the other day that 85% of venture-backed companies are dead inside 3 years– I’m damn proud of the fact that our business and team are going to be in the 15% minority. High-five guys, and godspeed!

A Designer in Support of Design Contests

Apr 01

15 years ago, you couldn’t even BEGIN to look for a house without a real estate agent (who takes 6-7% of the purchase price from the buyer). Today, the internet has changed that. 10 years ago, someone starting a small business had to eat a cost of thousands of dollars to get a solid looking logo– often more if they didn’t want to roll the dice on just using a solo designer (of if their first designer didn’t create something that they loved). Today, a small business can get dozens of designers working in a public forum for $500. I think that’s AWESOME. But like real estate, there are casualties. And, like real estate, there is anger. But to me, “transactional design” (the kind of design that can take a few hours to net a good product and doesn’t require a lot of consultation) is an inevitable casualty of the global economy and the evolution of the internet (see 99Designs).

It’s a Global Village Now

I was in India for 3 weeks last year and was STUNNED at the cost of labor. We rode in taxis for the entire trip and spent less on them than the 1 way trip home from the airport in Seattle. Talented tailors would throw in manpower of tailoring a shirt if you just bought the cloth. If it’s unfair to pay $500 for a logo, was it unfair for me to pay Indian market rates for a taxi ride (usually less than a buck or two)?

The $300 bounty for a winning logo design is a kings ransom for a young designer in most of India (and the rest of the world). Guess what, Western world? You’ve got to compete– and Walmart has taught us over and over again that consumers aren’t going to pay 10% more (much less the 1000% more that an onshore hourly designer would cost) just so they can feel good. Some of them will- but most of them won’t. We can’t put the genie back in the bottle here. You’re better off trying to find creative ways to compete than bemoaning the unfairness of it all– it’s like a cottage seamstress complaining about the existence of the new textile factory down the road– technology changes markets.

For a rural Indian designer, entering 10 contests per week and winning one for $500 might be a huge win (and he doesn’t have to write a single proposal!). And that designer might be damned talented. How different is this than a services business investing $500k in sales effort on 10 different $10m RFPs and ultimately winning one? In fact, isn’t this just a different sales investment/risk than costly networking, proposal writing, advertising, etc., etc? Heck, the designer doesn’t even have to issue a Net-30 invoice– 99Designs drops the money to the winner pretty instantly.

So I’m assuming that the gripe with design contests isn’t that people are getting paid LESS than they used to, but rather that they could get paid NOTHING even after expending the time and effort of producing a logo. Which brings me to my next point:

Whether you are a Business or Freelancer – getting paid requires that you risk time and money.

If you want paying work without spending time/money or taking risks, you should go find a job with a paycheck.

My first business (a technology consultancy) was CONSTANTLY investing staggering amounts of money and time to get customers…. We had sales guys, who made healthy base salaries and some commissions. We went to networking events to establish relationships with people who could be customers someday. We took existing clients to lunch to chat about projects on the horizon. We sent out custom holiday cards to every client every year to keep us visible. We built and maintained a web site with a rich and updated portfolio. We had snazzy business cards that had to be kept up to date. We had really nice business clothes for the clients that cared about such things. We cooked up gorgeous custom proposal documents for customers– and these proposals required considerable analysis work and consultation with the customer (spec work!). We even responded to RFPs sometimes (rarely). All of these efforts can come up empty, of course. Many of them did, but in aggregate, my business grew like gangbusters. Software is no different. I heard that Salesforce.com spends 60-70% of their topline on sales/marketing. Much of that is probably wasted, but I’m sure they are in a constant state of making their marketing spend more efficient (just like 99Design entrants are probably in a constant state of gauging the kinds of contests that will net them the most bang for their effort).

In short, getting paying work cost TONS of time, money, and risks (how many freelancers do you know who average 100% billability in a 40 hour work week over a year?).

If you are a fresh-off-the-boat designer (or a rural one), you should expect your costs and risk here to be higher than if you’re not. You’ll have to invest more and get less as you build up relationships, your skills, and a portfolio. If there are too many designers eager for work (as I believe there are right now– the design world is NOT growing as fast as were churning out design grads), the market is going to make this harder for you. Don’t like markets? Get a paycheck-job or go learn Ruby on Rails (then you can fall out of bed and land on 2-3 lucrative freelance offers).

The nature of design

The best work general comes from seasoned professionals who engage in a deep discovery process, run through a lot of iterations, and work closely with the client. That being said, you can see flashes of brilliance without all of this, especially in the world of “transactional design”. Some of the stuff on 99Designs is GOOD. For a logo, book cover, or smallish web site design (especially for a smallish business) the difference in value received between a $30,000 engagement and a $500 contest is not worth $29,500. In fact, the contest might (on some occasions) yield better results faster. Even if it doesn’t, it’s CERTAINLY faster and can help with brainstorming. From a purely economic point of view, rolling the dice with a contest is a quick experiment to run that might yield exceptional results. I could design a good from-the-hip book cover in a few hours and it MIGHT be great… Design can be random and certain design tasks are 90% inspiration and 10% perspiration rather than the inverse. The bigger the design project, the less this is true, obviously. Again, I think logos (for small businesses) is the sweet spot.

Supply & Demand

As a business, we try to be as fair as possible with vendors, but we’re in business to be profitable. If I look at the winning designs on 99Designs and I generally like them more as much as any designer’s portfolio, is eschewing the cheaper option really the way to go? Paying bottom dollar prices CAN mean that someone somewhere is being exploited. I’ve seen no evidence that the 99Designs designers are exploited however, though it’s obvious that there are designers with higher costs of living in the US who simply can’t compete on transactional design services.

If you answered “yes, as a matter of principal” to the last question, how do you feel about internships (unpaid or crappy pay)? How do you feel about buying sneakers that were made in a Chinese factory with awful working conditions (check your feet, please)? How do you feel about the fact that the average Google employee generates over $1m per year in revenue but gets paid less than 10% of that #? Shopping for the best dollar-to-value ratio generally means that someone gets a disproportionate cut of the wealth in the transaction (even just a little bit)… Though are Google employees really getting screwed? Is an Indian designer getting screwed if she’s pulling down $20k year on 99Designs? And where is the outrage about things like iStockPhoto? Or 99Designs’ Logo Store? Is responding to a clear need in a design contests for a speculative chance at pay really that different from a photographer tossing up a speculative photo on iStockPhoto and hoping that someone might eventually buy it? The ones that have great photos make a ton of money. The ones that suck probably need to take photography classes. Heck, is it really that much different from my startup, where I spent a big (expensive) chunk of my live to launch something hoping that someone would want to buy it? Isn’t a startup in the “spec-work” category?

Design contests are a meritocracy in the extreme– good designers can probably make good money and (with a track record of winning and a great portfolio), eventually graduating to less-speculative lead generation if they so desire (though I bet GREAT designers could net thousands a day on 99Designs). Bad ones don’t and have to seek other marketing avenues or other lines of work. Again, welcome to business. Given the huge number of designers that enter contests OVER AND OVER again, clearly many have decided that they’d rather roll those dice than roll the dice associated with RFPs, Adwords, hiring salesfolks and other lead-generation efforts.

These are just some thoughts. As a designer, I’ve never done spec work (unless proposals count– they probably should). As a business, I’ve never asked for it… But from either side of the table, I’m not sure I have an ethical problem with it. So from one (admittedly kinda mediocre) designer to the rest of you– how are design contests “damaging” designers beyond the way that Google News is “damaging” newspapers?

How to Ask for an Introduction

Mar 09

I don’t know a ton of important people. But as a founder of a venture-backed startup with some amazing investors and advisors, I do know a few.

With Nivi and Naval preaching the gospel of social proof (can I get an “amen”?!) and with fundraising posts and articles espousing the importance of introductions, it’s no surprise that about once a week someone asks me to introduce them to someone else. It’s especially common around Y Combinator Demo Day, where YC groups shift from pure product mania to fundraising mode. I’m pretty sure that YC tells new crops of startups to ask for introductions from the funded companies from previous sessions.

What does surprise me is how people ask for these introductions. Here’s pretty much how they usually read:

“Hey Tony. I’m [insert name] from [company name]. We’re starting our fundraising effort and I was wondering if you’d introduce me to [insert RescueTime investor/advisor].”

I usually will make the introduction, but the person asking for it is certainly not making the most of the opportunity (and asking me to spend my social capital by doing so). So after making a mess of these introductions in varied ways, here is my suggested checklist for making an introduction (it’s pretty much my reply when I get a request like the one above):

Write the introduction for me. Seriously. You know more about your story than I do. You know the things to say that will make someone light up. I don’t. I might flub it. I can personalize it (“Hey [insert investor name]- hope your trip to [offensively exotic location] was fun. Welcome back! Listen, I wanted to introduce you to…”), but you should make the pitch. Bonus: this saves me a few minutes of writing, which is kind and thoughtful of you!
Don’t bury the lede. What’s the thing that will get an investor excited? Be concise, but talk about social proof, traction, growth, size of the market, how badass your team is, mainstream press coverage, other investors who are on board, and user passion/joy. Choose whatever distinguishes your startup from the sea of startups that investors read about every single day. Unless your product is revolutionary, spend more time talking about your market (“we’re helping companies in the billion dollar widget maker market sell doodads”) and your team than your product (“we’ve got an ajaxy shopping cart!”). If they investor blogs or has EVER talked about their investment strategy, hopefully you’ve read how they think and tune your pitch to match that.
Heap on the social proof, man! Getting an email intro from a near-stranger (me) is about the weakest social proof you can get (but it’s better than nothing). Tell us how many other investors you have soft-circled. Give us a link to a list of all of the blog posts praising you. Or all of the users tweeting about you. We’re herd animals. If the investor feels like the herd is leaving him behind, that’s a good thing.
Think about why it’s an opportunity for investors. If I’m writing to an investor about a company that looks like a credible opportunity, that’s me doing them a favor. If you don’t have any bullet points that many you look like a great opportunity, that’s me doing you a favor and adding noise to their already overflowing inbox.
Keep it short. All of the above stuff could mean a lot of content. You’ve got to pick and choose what to send and hope it’s enough bait for the investor to dig in and learn more.
Bonus points: track it. When we were talking to investors, we created custom (private) pages for each investor we were courting giving them a ton more to dig through and get excited about if they wanted. The emails were short and sweet with a “want to learn more” link at the end. We used Google analytics to track which people clicked through and which individual pages they clicked on so we could know what to focus our discussions on when we met them.

All that said, if you’ve got a great investment opportunity (with a launched product and some happy users), don’t be shy about dropping me a line if I can help (with introductions or advice).

(post scriptum: If you are in the market for introductions, you should check out VentureHacks’ StartupList!)

(post post scriptum: If you’d like to learn more about making good introductions, Chris Fralic just wrote an outstanding post for the “connector” – The Art of the Introduction)

PR for Startups

Mar 02

My startup (RescueTime) has enjoyed some pretty ridiculously good PR (online, print, and video). It’s not a surprise that the most common questions that we get from other founders are about PR. How do you get press and the blogosphere talking about your product?

When you research this topic, you’ll see lots of technical and how-to articles that talk about how to build relationships with writers, how to use services like PRweb, how to format a press release, and more. In a lot of ways, this reminds me of SEO (search engine optimization). Research SEO and you’ll find a bunch of articles about page markup, link sculpting, meta descriptions, and all sorts of other mechanical processes. But what you won’t find much of is information that teaches you how to write great content and how to build your startup and features (from the ground up) with “linkworthiness” in mind.

Just like fabulous content solves 75% of your SEO problems, fabulous storytelling solves 75% of your PR problems.

I think there’s a lot of built-in contempt for PR and marketing among entrepreneurs (especially hacker-flavored entrepreneurs). We’ve all been in companies with fat communications budgets wasted by blow-hard marketeers, so many of us have dismissed the profession altogether. We’re so entranced by the concept that just building something people want will win the day. I remember cheering the first time I read the quote, “marketing is a tax you pay for being unremarkable“. I remember reading a statement on Hacker News that said, “my code speaks for itself“. Two years ago, I would’ve said, “Right on, brother! Preach it!”

But my mindset has shifted about 180 degrees over the past few years. I now believe that how you say something is at least as important as what you’ve built. The A/B testing and design/copywriting iteration that we’ve done over the past year (which has, over time, resulted in a 400% increase in conversion rate on our site) really has driven home this belief. What’s A/B testing if not a bunch of microscopic marketing/PR tests?

What you need to send to reporters and bloggers

If you’re reaching out to reporters and bloggers, you put yourself in the shoes of that person. They are looking to write a headline that causes readers to buy a magazine/paper or click on a link. They are looking to write a story to support that headline that causes readers to consume that content and (ideally) find the content so provocative (note that “provocative” can be VERY different from “valuable”) that they send the link to their friends and relatives, post it to Twitter, and write a supportive (or critical) write-up on their blog.

If you can truly empathize with a writer, you fairly quickly realize why your new social bookmarking app, web annotation service, or small business accounting app isn’t particularly newsworthy. You aren’t click-bait. You aren’t link bait. You aren’t going to sell a paper.

Which is why your most important problem from a PR point of view is this: How can you make your uninteresting (to a broad audience) company interesting?

The good news is that it’s quite do-able. If at all possible, read Made to Stick by the Brothers’ Heath. If you can’t read it, read this summary. If you can’t do that, just try to craft a story that succeeds in as many of these areas as possible:

Surprising
Funny
Personal
Has a story arc
Useful

(notice how low “useful” is on the list? That’s not an accident. You have to be REALLY useful to be worth talking about.)

A boring company with good storytelling skills can do some amazing things on this front. Off hand, I can name a company that sells shoes online that did pretty well on the PR front, a personal finance app that a lot of people talked about, and a creator of small-business project management software that people can’t stop linking to. If you want to see smaller/earlier successes, check out Balsamiq or UntitledStartup (both are doing some clever things out of the gates).

So if you tell your product’s story at a party (which you should, over and over!), watch the listeners eyes. Do they glaze over? Or do they light up? Do they laugh? Do they argue with you? Do they ask questions? If a you’ve never had a listener at a party say, “wait a minute– John over there would LOVE to hear about this… Let me grab him!”, then you probably aren’t ready to work on the mechanics of outbound PR. If at the end of your story, the listener doesn’t often say, “Can you tell me that URL one more time?” as they reach for their smartphone, then you need to keep working on your story. Because charging forward on outbound PR with a shitty story is pretty much the equivelant of working on your SEO mechanics when you know you have crappy content. Your’e ignoring the most important part in favor of the least.

Post Scriptum – On the Value of PR

Having enjoyed pretty great PR success, I wanted to throw out a final thought. Like a lot of accelerants (marketing and funding being two other examples), PR can be like throwing gasoline onto a fire. Or it can be like throwing gasoline on a pile of wet wood. It can be especially exciting if your business is enjoying growth already. But PR (and, more broadly, your startup) is a marathon, not a sprint. The first couple times you get a PR hit, you’ll quite likely be flummoxed by the fact that your traffic and usage doesn’t really change that much as a result. TechCrunch might get you 5-10k uniques. Being in the print version of the New York Times might get you a few thousand uniques. PR is not going to result in a viral/word-of-mouth explosion, but it’ll speed things up nicely if you’ve already got one happening.

As Andrew Chen says in one of his many fabulous posts (why bloggers and press don’t matter for user acquisition), if you’re going to spent time on marketing and PR, spend it on things that will pay ongoing dividends rather than 1-time dividends. Andrew was talking about stuff like viral loops and SEO, but in my opinion he missed the most important marketing “gift that keeps on giving” – crafting and tweaking a story that makes you worth talking about.

Considering Y Combinator (or any seed funding)?

Feb 22

[Timely note! We're hosting a Y Combinator Meetup in Seattle on Thursday Feb 25... details here!]

March 3 is the deadline for YC’s Summer 2010 session. I figured that I ought to throw my thoughts out there on the decisions that lead up to the application, the app itself, and the interview process that follows (if your app makes the cut!).

Making the Decision to Apply

First off, I think the most important thing to emphasize as an entrepreneur is that you should optimize for your chance of ~~success~~ a meaningful exit, NOT the magnitude of it, should it happen. It may seem like selling for millions to Google is a foregone conclusion given how brilliant you are, but it’s not. Startup success is a tough slog with lots of randomness outside of your control. If you can trade a little bit of equity to nudge up your shot at success by a few percentage points, you should do so. Thankfully, YC from this perspective is a no-brainer. No one can argue that it doesn’t improve your shot (with the amazing mentoring they provide, the investor introductions/credibility, and PR bump), and if you calculate YC’s take is if you sell for $100m (divided by the number of founders), it isn’t too painful.
Think about what you’re building, what market you’re playing in, and whether it’s appropriate for venture financing. I think I recall reading about someone applying who was proposing to build an app to manage Dungeons and Dragons campaigns. While there’s probably a business there, it’s pretty unlikely that the pen-and-paper RPG market is going to be the next big thing to change the world. Pick a big market– or better yet, pick a small market that can eventually morph into a huge market (like classifieds for San Francisco, selling books online, or an online garage sale).
Read everything here and make sure you agree with some of it, but don’t be afraid to disagree with some of it either!
Do something bold. You aren’t going to be thinking to yourself on your deathbed that you really should’ve taken less risks. YC is a blast. You get to meet amazing mentors, other great startup founders, and a few fairly impressive robots.
Consider how committed you are to your idea/market, your company, and your co-founders. YC has plenty of flips, but the majority of ‘em seem to be going concerns for years. Can you get excited about what you’re doing (and who you’re doing it with) for 7 years?
Do a gut-check on your team. Do they have the rough ingredients necessary to kick ass? If the better mousetrap you propose to build is going to be better because of an amazing UI, make sure you have a great UI guy. If you’re doing a vertical search/UGC play, make sure someone is at least a little interested in SEO. If you’re going to sell software to businesses, make sure someone is willing to sell stuff. And, of course, if you’re tackling something with big technical challenges (like most of us are) make sure you have some great hackers.

The Application Process

Read Paul’s essays. It provides good insight into what’s important to him (and YC). Reading Founders at Work is a good idea, too. It’s a great book and shows you some patterns for startup success.
Remember that the app is a sales pitch and focus your answers on the things that are important to YC. The biggest risks to YC are:
- That you don’t have the chops to build something good. The best way to deal with this concern is to show them something good that you’ve built. Preferably several things, and preferably things that you’ve built with your co-founders.
- That you’ll get bored/discouraged and quit. So try to work in examples of times when you’ve persevered despite significant obstacles.
- That you’ll fail to make something that people want. So do what you can to show that you’re in tune with the market you’re proposing to serve. You can be a badass hacker with unflagging dedication, but if you don’t/can’t understand your users, you’re probably not going to be a big win for YC.
Don’t be too shy or too arrogant to sell. I remember reading a comment on Hacker News that said, “My code speaks for itself.” No, it doesn’t. At least, not to investors, customers, employees, reporters, and the zillions of other people out there you’re going to have to sell to.
Get working on your software ASAP. If you apply with a functional product (or even a launched product that people love), you remove a lot of the risks listed above.
Get working on the YC app ASAP. If you’re unsure, apply! The app takes a few hours and it’ll help focus your thinking if nothing else.
If possible, make sure that your whole team is ready to dive in whole hog. Starting something up is a commitment to your founders and to your new investors. Having a team member who has other commitments can be a source of contention.
Hack the system! Every session I get emails from people asking me to review their apps. I usually do. I can’t imagine why you wouldn’t do this… YC founders are people who wrote successful applications and spent at least 3 months getting repeatedly kicked in the junk by Paul Graham and friends. I’m sure we must know something about how YC thinks that might not be obvious. If you can’t bring yourself to ask a stranger for some time, how are you going to raise money after YC? How are you going to hire your first employee?

The Interview

I don’t recall the stats on how many applications make the cut, but if you get asked in for an interview, congratulations! Now get to work building something (hopefully you already have).

Get started on a demo. If you walk in and start monologuing, you’ll fairly quickly get interrupted and asked to start showing stuff.
The “demo” will be less like Steve Jobs and more like Guantanamo Bay. You’ll be derailed almost instantly and peppered with questions and objections.
Have a backup idea that you’re comfortable talking about. I know several founders who were essentially told, “we don’t like that idea. Do you have any others?” This may be a test of how much you love your idea as much as anything else. Founders who refuse to pivot often die from it. It also might be a test of your ability to have good ideas. If they don’t like your idea OR your backup, they might los faith in your ability to grok what people want.
Practice. Ask 10 smart people to name 10 things that will make your idea fail. Have good responses for those objections. Don’t practice a speech. Don’t practice a 10 minute demo, practice little 1-2 minute chunks of a demo that you can string together if they leave you alone. Practice individual talking points and responses.
Be willing to be wrong but also be willing to disagree. YC doesn’t want lapdog PG fanboys(and girls!), but they also want people who are coachable and willing to learn. Don’t be afraid to say, “That’s one of the things we’re going to have to figure out, but we have a few ideas.”
Be dynamic and energetic. You’re a storyteller here. Your job is to get YC excited about your business. Make them believe that it (and YOU) are an investment opportunity. Work on eye contact, not talking to too fast, and thinking on your feet. Have someone role-play an aggressive interviewer.

That’s about all the advice I have. I’d close with this point– very very very few YC founders wouldn’t do it again in a heartbeat. It’s a killer experience and it’s certainly a needle-mover during the most fragile part of your new company’s life. Applying is cheap in terms of time and rewarding even if you don’t get asked in for an interview. Do it!