People first. Technology second.

With Twitter, it's as easy to unfollow as it is to follow.

This idea that the open exchange of information can have a positive global impact is being proven over and over again around the world nearly on a daily basis - and for Secretary Clinton to recognize that, I think, is a huge step.

We realized we weren't really using Odeo, we weren't investing our own time creating podcasts. We were building a tool that was a great idea for some other people. That's a dangerous way to go because if you don't actually use it yourself and love it, then you aren't going to be as fully invested in it from the start. That's what leads you to doing side projects.

Embrace your constraints. They are provocative. They are challenging. They wake you up. They make you more creative. They make you better.

We did Twitter, and Twitter grew so fast, and in 2006 we spun it out into Twitter, Inc.

Both my wife and I have a lot of compassion for animals in general.