Here's a video of Clay Shirky's speech at the Web 2.0 Expo 2008. His recently published book, Here Comes Everybody, looks at the culture of participation that is growing around Web 2.0.

I know that most public libraries in NSW are thinking about using Web 2.0 tools to reach out to users. One of the questions many people have is why we should be doing it if our community doesn't currently use those tools? Indeed, we are struggling to get much in the way of comments on our blog from the members of our community at my place of work. Comments aren't really on fire on the RISG blogs either (c'mon people, share!). But it's only a matter of time. Clay Shirky puts that argument in an eloquent and entertaining way.