First off, anyone ever heard of BookMooch ? It's an online book exchange community where you can get points when you upload your list of books you want to send, domestic and international, or when you send books to other people. Each book you add to your inventory gives you 0.1 point. Each book you send gives you 1 point if you send domestically and 3 points if you send internationally. Of course not all books are available but it's pretty useful. There's nothing like receiving a book in the mail hehehehe. If you do sign up look for me, wiredlain.