On the social graph:

Zuckerberg: “What we’re trying to do at Facebook is take that social graph which already exists and map it out. Then we can take that map we’ve constructed and connect everything through applications… That concept is deep in the company’s philosophy. In fact, we thought of building a platform for social applications before there was ever a Facebook. And it might take 30 years or tens of years before it’s a mature application. But it’s really amazing how quickly it’s taken off so far.”

On opening up Facebooks social graph:

It’s the user’s data. We want to get there, that’s the goal. If you look at where we’ve gone in four years, from just one college letting people share a very limited amount of information… we want to get there. It’s a flaw in the system now and we want to get it out as soon as we can. I don’t know how long it’s going to take.