About half my time is spent on business operation type stuff.

The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

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.

People are learning how to use the site and what's OK to share. As time goes on, people will learn what's appropriate, what's safe for them — and learn to share accordingly.

Half our life is spent trying to find something to do with the time we have rushed through life trying to save

90 percent of my time is spent on 10 percent of the world.