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

I try to shrug it off as a minor annoyance that whenever I do something successful, every capitalist out there wants a piece of the action.

We also have a dog. His name's Beast. He's a sheepdog. He's super cute. I love him.

For the first time we're allowing developers who don't work at Facebook to develop applications just as if they were. That's a big deal because it means that all developers have a new way of doing business if they choose to take advantage of it. There are whole companies that are forming whose only product is a Facebook Platform application.

There are a few other things that I built when I was at Harvard that were kind of smaller versions of Facebook. One such program was this program called Match. People could enter the different courses that they were taking, and see what other courses would be correlated with the courses they are taking.

The question isn't, 'What do we want to know about people?', It's, 'What do people want to tell about themselves?'

More than four million businesses have Pages on Facebook that they use to have a dialogue with their customers.