I just finished reading an article on blogs and teachers. It likens, rightly so after reading various instances presented, weblogs to faculty rooms. The article is available through OhioLINK's database Academic Search Premier. Here's a link to the post, or at least what I hope is a persistent link to the post, if you are interested: This Time, It's Personal.
Diane - your IRC blog looks great. Have you had much response to the blog from students or faculty? Have you been able to determine if it's being used (is that the right word for a blog?) Did the blog replace some previous form of communication, such as a written or electronic newsletter?