Almost any mistake you can make in running a company, I've probably made

The trick isn't adding stuff, it's taking away.

We're really at this point where we can take a step back and think about the next big things that we want to do.

I think video is a mega trend, almost as big as mobile.

When you think about it, there's no way to input things into a computer. It's all... the holes only go out, right? Like you can plug a keyboard or a mouse in but that's a trick because the computer thinks the inputs are outputs. That's a programmer trick, basically magic. The key to the future is to make holes that go in too.

There have been misperceptions that we're trying to make all the information open on Facebook, and that's completely false. There are big buckets of information that we recommend that you share with only your friends privately. Then some of the more basic information, we recommend that that's visible to everyone.

The most important thing is to keep your team as small as possible.