If you are anything like me, someone who loves to read, then you no doubt have books all over the place.  I have a box full of already read paperbacks.  I found this great site – www.paperbackswap.com.  It is free to sign up!  You load the books you own, that you want to swap, by inputting the ISBN number.  All you pay for is the cost to ship your book to the person requesting it.  You get credits once you ship your books – and can use the credit to request books from other members.  You also get 2 credits upon registering – so you can request books right away!  I just signed up, loaded 10 of my books on the site, and requested 1 to be shipped to me.  Pretty cool way to get some new reading material and re-use my old paperbacks, at a minimal cost.