Wow! Book swapping sites to feed your book collection on the cheap!

Hello readers! While going through the Real Simple magazine March 2007, I found a recommendation for two book swapping sites that will help you trade your books for very little money. The first is PaperBackSwap.com and lets you trade your paperback books for paperback books from other people. You create your free account online, then list the paperback books you are willing to give to other people (you will not see them again, so don't give away your treasures). When a person requests a book from your list (which can happen in a very short time --sometimes minutes), you mail the book to the person (and request Book Rate from the postmaster). You are paying the postage and supplying the envelope you mail it in--on paperbacks, it is only around $1.60 per book + envelope cost. When the person receives the book, you get a credit to choose a book of your own, which you'll get totally free! The other similar service is TitleTrader. Title trader works the same way, but you can list DVDs, CDs, and hardbacks. Remember the shipping costs for a hardback can reach $4.00. I am picturing this as a way to trade and get classroom reading assignment books for a great price!!!