You have to travel globally today to know what's going on and maintain an edge.

It is hard to think of practical applications of the black hole. Because practical applications are so remote, many people assume we should not be interested. But this quest to understand the world is what defines us as human beings.

The polling of Internet users shows that friends recommendations are the most reliable driver behind purchasing decisions. Right now that market is largely untapped. Facebook and other social networks can allow that to happen.

Google never knew how successful key words would be.

Facebook is at the forefront. It's the company that can fundamentally change the way information is being exchanged and processed. It can be the basis for artificial intelligence to develop over time.

Facebook now is mostly about people you know. In the future it could be about people you know less but are more important.

Russia is one of the places where significant presence of social networks are driven by domestic players right now.