Shelfari vs aNobii
Shelfari is a community-powered encyclopedia for book lovers. Create a virtual bookshelf, discover new books, connect with friends and learn more about your favorite books – all for free. See what your friends are reading. Create virtual bookshelves for your books to keep track of what you've read. Discuss your favorite books in a book club.
Shelve and show off your books. Find. Discover your next book with the help of the aNobii community. Share. Rate and review your books, share on Facebook and Twitter