No one has done a study on this, as far as I can tell, but I think Facebook might be the first place where a large number of people have come out. We didn't create that - society was generally ready for that. I think this is just part of the general trend that we talked about, about society being more open, and I think that's good.

You hear these stories about people who take apart their radio and put it back. Or just learn a lot from taking it apart. But I wasn't as into that stuff as I was just into how computer programs work.

Companies face a handful of different risks, whether it is competitors or different market environments. But I think that people focus way too much on competitors and not enough on their own execution.

If you just work on stuff that you like and you're passionate about, you don't have to have a master plan with how things will play out.

Mobile is a lot closer to TV than it is to desktop.

Free basic internet access should be like dialing 911 in the US or 100 in India.

When I started Facebook from my dorm room in 2004, the idea that my roommates and I talked about all the time was a world that was more open.