I belong to the site Paperbackswap.com. it is great, you post books you have already read and when you mail books to people who request them, you get points to request books you want. I am using it to get some books I want and to get books for my DS for his summer reading he will have to do soon! It is great , you just pay for the postage to send books out, thats the total cost. Cheaper than going to bookstores to get them!