If you can work a brand successfully into the narrative of your product, then it's really cool. Then people actually take the brand up and say, 'My positive experience in your product is directly connected and influenced by this brand and that worked great.

Facebook and Myspace are the U.S. audience, which is tried and true when it comes to being susceptible to ads.

If the game designer produces more content than he can consume per month, some fraction of the people will say more quests, more tests, more challenges, more whatever, and they will be compelled by it.

PayPal once rejected a candidate who aced all the engineering tests because for fun, the guy said that he liked to play hoops. That single sentence lost him the job.

Media is very different from financial services. People are very fickle and very vocal. They believe that things should be one way and not the other. It's still very rewarding to build products for huge audiences. It feels like you're making an impact.

Facebook is so ubiquitous now that it's like another manifestation of the web itself.

I think the hallmark of a really good entrepreneur is that you're not really going to build one specific company. The goal - at least the way I think about entrepreneurship - is you realize one day that you can't really work for anyone else. You have to start your own thing. It almost doesn't matter what that thing is.