The december's Communications of the ACM is a special issue about blogging. Stuff to read this week end ;)

The BlogosphereIntroduction Andrew Rosenbloom, Senior Editor Structure and Evolution of Blogspace Ravi Kumar, Jasmine Novak, Prabhakar Raghavan, and Andrew Tomkins Why We Blog Bonnie A. Nardi, Diane J. Schiano, Michelle Gumbrecht, and Luke Swartz Semantic Blogging and Decentralized Knowledge Management Steve Cayzer How Blogging Software Reshapes the Online Community Rebecca Blood Democracy and Filtering Cass R. Sunstein