Feedburner (23)
I thought I'd take a look at Feedburner since I'll most likely be setting up some RSS feeds for the library and it won the Feed Management Web2.0 award. Feedburner looks like google analytics for RSS feeds. It tracks usage of feeds as well as cleans up feeds you send it. Now that I'm starting to blog, I may someday use it as a source of revenue since you can insert ads within the feeds, even though I doubt I'll ever have a blog that people will continue to read.