I think LibraryThing is a pretty cool site. It allows me the opportunity to do something that I've been wishing I could do pretty much my whole life: list all the books I own and tell people what I think of them. :) I think I mentioned in an earlier post that I will be starting library school this fall. ;) So far, I think it's pretty easy to use. I like how it draws title information from amazon.com, so it's in a familiar format for most people. I can't wait to find that spare time at home where I can take my laptop to the shelves and start listing away!
I have heard of libraries using LibraryThing for Libraries. That could be cool, but I think for now I prefer to use it in my home.