The biggest mistake we see companies make when they first hit Twitter is to think about it as a channel to push out information.

I think that Microsoft will increasingly feel margin pressure from Linux as well as people saying: well actually the applications that really matter to me are not on my PC. And so they're going to be able to extract less of a monopoly rent, so to speak.

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.

Obscurity is a bigger problem for authors than piracy.

Being too early is indistinguishable from being wrong.

The network is opening up some amazing possibilities for us to reinvent content, reinvent collaboration.

I think Microsoft will have to change. I think that the business of Microsoft, the company of Microsoft, is going to continue to succeed. But I think the business model of Microsoft is going to have to change.