apikorus
recommended this
it is what it says, a great way to exchange books with strangers. It's a point based system, you get 2 starter points for signing up and listing 10 books you're willing to swap. For every book you send out (you pay postage) you get a point. For every book you request sent to to you (they pay postage) you spend a point. Ends up to be $2-3 per book, which is about what i pay at Goodwill.