GoodReads

Get social with your reading!  Keep track of what you have read, want to read and are reading.  See what your friends are reading, get reading recommendations and more.  Great read-a-likes.  Create a free account to access additional features.

LibraryThing

Catalog and keep track of your library and find readers with eerily similar tastes.  Join an online book group or find a new favorite author.  Create a free account to access additional features.