Great interview over at Library Garden:
http://librarygarden.blogspot.com/2006/09/blog-based-library-websites-interview.html
Well we are getting lots of great comments about how up to date our site is. People really like seeing the latest news on the front page in reverse chronological order. And, of course, one big benefit is being able to offer an RSS feed through Feedburner. We like to stress that we can bring the news about the library to you on your schedule rather than you having to come to us all the time. One drawback has been that we have found that not a lot of people are acquainted with RSS feeds and we have to explain how to subscribe a lot.
Read the whole thing! There is some great info about making the conversion to a blog-based Web site.