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.

We're all put on Earth for a limited amount of time. Am I using in a way that is great, or good enough, or wasteful?

Right now, nearly all the apps on Facebook take a week to build. No more.

Technology has come a long way since PayPal.

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.

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.

I've been developing mobile for years before anybody else really thought it was that important.