Wow. First off, I didn't realize there is a library and info sciences wiki, but there is-- LISwiki. Then I also didn't know anyone had tried to list all blogs by librarians, and finally I didn't know I was listed in this list. See: Weblogs - LISWiki.
Okay, so I'm really behind the times. 8-)
I encourage you to have a look around and perhaps even contribute some content, even if you don't personally have a blog. Great chance to try out a wiki!