The success of Facebook is because we empowered people. We gave people a way to share their opinion online that a lot of people didn't have before, and to connect with people that they didn't have before and that is why we have been so successful.

As we make investments in technology and learn how to automate things, we want our people to learn that and go with us.

At Facebook, we build tools to help people connect with the people they want and share what they want, and by doing this we are extending people's capacity to build and maintain relationships.

I think that there is a role that Facebook can play in empowering community leaders, to strengthen existing communities, to help build new communities, to help look out for people in their community, to help keep people safe.

We talk about this concept of openness and transparency as the high-level ideal that we're moving towards at Facebook. The way that we get there is by empowering people to share and connect. The combination of those two things leads the world to become more open.

People love photos. Photos originally weren't that big a part of the idea for Facebook, but we just found that people really like them, so we built out this functionality.