#11 LibraryThing

Visit LibraryThing at: http://www.librarything.com/
Visit my library at: http://www.librarything.com/catalog/spacecadetbeta

What is LibraryThing you say, I'll quote the website "about" page: "LibraryThing is an online service to help people catalog their books easily."

Basically you can search for books by the title, author, ISBN etc from a combination of sources such as the catalog of Amazon, the Library of Congress or 82 other world libraries.

Once you find the books your after you can "add" them to your collection and then process. By process I mean that you can add book ratings, add tags to a book to help in searches, review books, edit the books details and much more!