realizing that you could follow your friends, you could follow your family, you could follow what breaking news is happening around the world. and it became that sort of thing. that's what it is today. that's how most people i think are accessing twitter. >> what i like compared to something like facebook, for example, is if you allow people to become a friend on facebook, they can keep bothering you whenever they want. you can't stop them. and they know when you're not replying. on twitter, because of the sheer volume of people that comment and pass message, you're under now compulsion to respond to anybody. that takes away a lot of the pressure of these enforced friend or followers. was that part of the thinking? >> so it's always been focused on the recipient. so you can write something and it goes out to the world, and people choose to follow it or not. and like biz said, they follow their interests, they follow what they're passionate about and talk about it on the service with their friends. we have this information network constantly pushing out what's most meaningful and what's most