BookMooch.com is a community for exchanging used books. BookMooch lets you give away books you no longer need in exchange for books you really want. There is no cost to join or use this web site; your only cost is mailing your books to others. Every time you give someone a book, you earn a point and can get any book you want from anyone else at BookMooch. Once you’ve read a book, you can keep it forever or put it back into BookMooch for someone else, as you wish.

PaperBackSwap.com began in 2004 as a way for book readers to share their already-read books with each other via the Internet. Since then it has grown enormously with a library of over 2.2 million books, which includes paperbacks, hard covers and audio books. To date over 2 million books have been swapped successfully through the U.S. mail. The clubs are easy for members to use. A member simply logs onto the site and selects a Book/CD/DVD that they want. Then the system sends an email to the member that has the selected item. The sending member then simply prints two pieces of paper from their printer, wraps the item with those papers, attaches postage and drops it in the mail. Just drop it in the mail and the requesting member gets the Book/CD/DVD for free! Of course, members do have to pay for postage when they mail an item. But every time you mail one, another member returns the favor and mails you one that you have selected from the club. Postage to send a typical book is $2.23 Media Mail rate, and the mail transit time averages about a week.

Better World Books collects and sells books online to fund literacy initiatives worldwide. With more than two million new and used titles in stock, we’re a self-sustaining, triple-bottom-line company that creates social, economic and environmental value for all our stakeholders. For Better World Books, the triple bottom line comes in lots of forms. From helping to build a nursing library in Somaliland to offering customers carbon neutral shipping on every book they buy, doing good is not just a part of Better World Books’ business—it is the business. Sell or Donate Your Books to Better World Books!

Swap.com saves you a bunch of money by swapping for gently used items instead of buying new. Each swap consists of a nominal transaction fee and the cost of shipping. The cost of getting a book, cd, dvd, Blu-ray, audiobook, or video game is much less expensive than buying the item new. Here’s how it works. There are two swap fee levels. One for low value items and one for high value items. High value items include video games for the most recent platforms (XBOX 360; Wii; PS3; etc), multi-disc movie sets of 3 or more discs and CDs containing 4 or more discs. Everything else is considered low value. Each swap fee will be based on the item you are receiving.