Sell your books online!

Book store Powell's Books has started allowing people to sell their used books to them online. Instead of putting your books up on something like eBay or Half.com and waiting for them to sell to some prospective buyer, you can enter the book's ISBN on the Powell's Web site, they'll tell you how much they'll give you for the book and if you accept, will send you a postage paid envelope in which to mail them your books. Instead of getting cash money, however, you get store credit. So it seems pretty win-win if you have any books you want to get rid of!