Twitter is the world.

There's an entire universe in every single tweet, and it all really depends on the content as far as how it's going to spread.

I'm less interested in how people are following each other and more interested in how they are following topics and tweets themselves. People are following more key words and concepts and more ideas and acting on those rather than individuals or organizations.

It's really complex to make something simple.

Making something simple is very difficult.

I said a long time ago that Foursquare can make cities better. You have these augmented realities like Foursquare and Twitter and Facebook that provide these virtual nodes and instant feedback from anywhere, adding annotation around a physical places.

We get to design what we want to see in the world rather than doing what other people think should be done.