Clay Shirky gave a talk at the Berkman Center covering some of the ideas from his new book Here Comes Everybody: The Power of Organizing Without Organizations. The video is online from Harvard under a Creative Commons license. The focus of the talk is Shirky's notions about the enabling power of the Net and along the way he has a lot of interesting things to say about sharing, including Napster and a variety of other collective sharings like American dubbings of Japanese anime.

There's a lot of power in sharing and Shirky points to several interesting examples of that power. The video is a bit long and definitely not high production value, but definitely worth the time. I need to read the underlying book to parse through the ideas more fully than I can get from a single talk.