Goodreads was launched in January 2007. It is the largest site for readers and book recommendations in
the world. We have more than 9,200,000 members who have added more than
330,000,000 books to their shelves. A home for casual readers and bona-fide
bookworms alike, Goodreads users recommend books, compare what they are
reading, keep track of what they've read and would like to read, find their
next favorite book, form book clubs and much more.
Check Goodreads on this link: http://www.goodreads.com/