Amazon.com has created an associates program that allows off-site page creators to link to a book on Amazon.com and receive a finder's fee if the visitor buys that book. They harness the energy of the Net to make hobbyists and other sellers partners in funneling qualified traffic to the Amazon.com website.
Nielsen, Jakob (1998), "Better Than Reality: A Fundamental Internet Principle," Alertbox, March 8, 1998.