Notice the new feature in the left hand column. I’ve been looking for a convenient way to catalog my books and share some of my favorites with friends and family. I happened upon LibraryThing which allows you to create a list of books (and other media) that you own. You can then add a javascript to the website and “pooofff,” random books are displayed. One can also see others users’ collections and shared books. There is a discussion area and a blog. The site is well designed and intuitive. Take a look.