Links
Amazon Associates
https://affiliate-program.amazon.com/gp/associates/joinAssociates is Amazon.com's affiliate marketing program. Provides books and CDs. Contains program overview, commission rates and linking details.
PR: 9BookSense
http://www.booksense.com/affiliate/Offers books for sale on website from independent bookstores. Includes program overview, signup form and linking details.
PR: 7