Having two identities for yourself is an example of a lack of integrity.

In addition to building better products, a more open world will also encourage businesses to engage with their customers directly and authentically. More than four million businesses have Pages on Facebook that they use to have a dialogue with their customers. We expect this trend to grow as well.

More than four million businesses have Pages on Facebook that they use to have a dialogue with their customers.

Our strategy is very horizontal. We're trying to build a social layer for everything. Basically we're trying to make it so that every app everywhere can be social whether it's on the web, or mobile, or other devices.

I personally don't invest in a lot of companies because I think it would be a conflict of interest and Facebook doesn't typically either.

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

The ability to share whole scenes form our lives will be a valuable thing over time.