I just found one of the neatest uses of the internet you can think of. It’s called LibraryThing and it’s great! I use a program called Book Collector that I keep a catalog of all my books in. I simply exported out an ISBN list from it and imported it at LibraryThing and now my library is online and available for viewing by all. You can tag your collection, rate it, and even put a widget on your blog as mine has. You can see it on the the right sidebar below. You don’t have to import, however. You can start from scratch and just enter your books manually by name or ISBN. It’s an incredible site. Enjoy!