Mark Zuckerberg

American computer programmer and Internet entrepreneur. He is best known as one of five co-founders of the social networking website Facebook.

About Celebrity

Look at the way celebrities and politicians are using Facebook already. When Ashton Kutcher posts a video, he gets hundreds of pieces of feedback. Maybe he doesn't have time to read them all or respond to them all, but he's getting good feedback and getting a good sense of how people are thinking about that and maybe can respond to some of it.