Will Richardson, Supervisor of Instructional Technology and Communications at Hunterdon Central Regional High School in Flemington, NJ and "Learner in Chief" at Connective Learning, has an awesome blog site about blogging in education: 
 
http://www.weblogg-ed.com/ 
 
He has also made public his Bloglines list of Weblogs in Education -- blogs of educators who are exploring ways to integrate blogs into their curricular areas: 
 
http://bloglines.com/public/wrichard 
 
Check it out!