I was just reading an article in the Chronicle of Higher Education about an assistant professor at Case Western Reserve University who used a blog to extend discussion outside the classroom. His class topic involved fair use and copyright law. Apparently, he set up a free blog, called What Is Fair Use?, gave all the students the login information, and let them have at it. The resulting blog is a fascinating collage of opinion, links, visual images, scholarship...in short, a terrific way to empower and challenge students to extend their learning.
Just follow the hyperlinks above to check it out.