Two points of interest in an article in American Libraries (March 07) on blogging:
1. Don't let those "afraid of what will happen" -- spammers, criticism, etc. -- slow down the process of creating an institutional blog (p. 44).
2. One blogger calls for us to "deal with old-school library practices" in blogs, such as readers' advisory (p. 44).
Point 2 sounds like something I could do.