Want to create your own virtual bookshelf? That's easy. Goodreads.com will do just that for you. Goodreads users can recommend books, compare what they are reading, keep track of what they've read and would like to read. It's a great place where you can see your friends bookshelves and learn about what they are reading and what they thought of the books they've read.

http://www.goodreads.com/