I purchased Blogs, Wikis, Podcasts, and Other Powerful Web Tools for Classrooms, 3rd edition by Will Richardson a while back. It was on a recommended readings list for one of our cohort classes. ANYWAY, I have found it to be an excellent resource for the following reasons:
1) Web tools that are addressed in relationship to pedagogy for the classroom with clear teaching examples and references to more information.
2) Clear step by step instruction is given to create and use the various tools, while not being too technical, yet supporting the process and clarifying details.
3) Completely up to date technologies that we have been learning in every course (and addresses upcoming topics)
Just sayin' I like it, it is a good read and a great resource