I remember flying in, driving down 101 in a cab, and passing by all these tech companies like Yahoo! I remember thinking, 'Maybe someday we'll build a company. This probably isn't it, but one day we will.'

I spend a lot of time just, you know, with my girlfriend and my dog. And I mean, we don't have a lot of furniture in our house, so it's really simple. And we're trying to build products for everyone in the world, right. And you don't want to get isolated to do that.

Open Graph is a language for structuring content and sharing that goes on in other apps, and we're continuing to build it out longer term. But we found we need to build more specific experiences around categories like music or movies. Where we've taken the time to build those specific experiences, stuff has gone quite well.

We are a mission-driven company. In order to do this, we have to build a great team. And in order to do that, you need people to know they can make a bunch of money. So we need a business model to make a lot of money.

Facebook is in a very different place than Apple, Google, Amazon, Samsung, and Microsoft. We are trying to build a community.