This on-line national club allows its members to share paperback, hardcover, and audio books with other members. Each member lists books she/he is willing to mail upon request. When a book is received, the sender receives one credit, which he/she can use to order a book from another member or may keep the book. The only cost involved is the shipping of a book. Members may also purchase books, CDs, and DVDs at discounted prices, as well as swap CDs and DVDs, using a similar process.