Google, I think, in some ways, is more competitive and certainly is trying to build their own little version of Facebook.

Advertising works most effectively when it's in line with what people are already trying to do. And people are trying to communicate in a certain way on Facebook - they share information with their friends, they learn about what their friends are doing - so there's really a whole new opportunity for a new type of advertising model within that.

We want Facebook to be one of the best places people can go to learn how to build stuff. If you want to build a company, nothing better than jumping in and trying to build one. But Facebook is also great for entrepreneurs/hackers. If people want to come for a few years and move on and build something great, that's something we're proud of.

If you actually do something you love it's a lot easier and takes on a lot more purpose.

The thing that we are trying to do at Facebook is just help people connect and communicate more efficiently.

I think that people just have this core desire to express who they are. And I think that's always existed.

I don't have an alarm clock. If someone needs to wake me up, then I have my BlackBerry next to me.