Do you all already know about bookmooch? See www.bookmooch.com . It is a super cool way to trade books where you list books you don't want anymore and when other people 'mooch' them, you get a point, which you can then use to mooch a book from someone else.
They give you 0.1 point just for listing a book in your inventory, so if you list 10 books, you have a point available for mooching without having to wait for someone else to mooch from you first. You can read any text file or web page that has ISBN numbers on it and import them into your inventory or your wish list. And when any book on your wish list becomes available, you get an email letting you know.
Check it out! I have been having loads of fun with it. If you do join, you can find me by searching for 'smoorefu'.