Discover Books
Is the world’s largest site for readers and book recommendations. Their mission is to help people find and share books they love. 


 
This social media site is focused on books. Members can build virtual bookshelves, discover, rate and discuss books, and participate in online groups.

 http://www.bookish.com/home
Discover new and best selling books. Get exclusive sneak peeks and  recommendations. Everything you need to know about the world of books.

wsirn
Enter a book you like and the site will analyse our huge database of real readers' favorite books to provide book recommendations and suggestions for what to read next.
 
 

 
librarything  
Catalog your books, write reviews, connect with others through Forums and Groups.