Great book about library 2.0

Andrew posted about using library 1.0 (i.e. books) to learn about library 2.0. My favorite book about Library 2.0 is "Social Software in Libraries: Building Collaboration, Communication, and Community Online" by Meredith Farkas. She does a great job of introducing the concepts and describing how to add library 2.0 features to your library. She is careful to emphasize that each library needs to evaluate which library 2.0 tools will work well for their particular patrons and staff.