This is a great site for people who love to read, but don't have a ton of money to spend on books. It is absolutely free to join, although there are options that cost money, but are strictly voluntary. When you sign up and post 10 books (hardback, paperback, or audiobooks) that you are willing to let go of, the site gives you 2 credits which you can use to request books from other members. You pay nothing when you request a book. When another member requests one of your books, you pay only the cost of postage (which is even available on their site). You get 1 credit for each book you send… read full review »