The nice thing about twitter is the architecture of visibility. Email is invisible unless you reach out to someone directly. With Twitter, anyone can follow you and this is one of the big changes that was really introduced by Flickr, was this wonderful idea that you can follow somebody without their permission. Recognizing that relationships are asymmetrical, unlike facebook where we have to acknowledge each other otherwise we can’t see each other.

Web 2.0 is the business revolution in the computer industry caused by the move to the Internet as platform, and an attempt to understand the rules for success on that new platform.

Just do something that lights you up, and lights up your customers, and lights up the world and scale to that.

There are more than 21 eBook channels already. Authors can’t possibly get to these and do what they do best.

A book is always a dialogue with other readers and other books.

Programming is how we talk to the machines that are increasingly woven into our lives. If you aren't a programmer, you're like one of the unlettered people of the Middle Ages who were told what to think by the literate priesthood. We had a Renaissance when more people could read and write; we'll have another one when everyone programs.

Create more value than you capture.