I was reading other blogs and somebody mentioned Swaptree. www.swaptree.com All you do is type in the ISBN number of the books that you have read already or no longer want, and it pops up with a bunch of options for trades. All you pay for is shipping and you can trade as much as you want. How cool is that? I'm totally there, because with the lack of abundant cashflow, it sure is nice to still get new-to-me stuff!