Of course, hate speech and racism have no place on Facebook

People influence people. Nothing influences people more than a recommendation from a trusted friend. A trusted referral influences people more than the best broadcast message. A trusted referral is the Holy Grail of advertising.

Building a mission and building a business go hand in hand.

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.

If we want to have the biggest impact, the best way to do this is to make sure we always focus on solving the most important problems.

For the first time we're allowing developers who don't work at Facebook to develop applications just as if they were. That's a big deal because it means that all developers have a new way of doing business if they choose to take advantage of it. There are whole companies that are forming whose only product is a Facebook Platform application.

Google, I think, in some ways, is more competitive and certainly is trying to build their own little version of Facebook.