This document discusses affiliate marketing programs. It explains that affiliate marketing involves rewarding affiliates for each visitor or subscriber they generate. Affiliates promote products through their websites but do not directly sell them. The document outlines benefits of affiliate programs such as them being a cost-effective way for merchants to generate e-commerce revenue without hassle, while only paying affiliates based on performance. It also describes how affiliate networks work with a network administrator, affiliate coordinator and affiliates, and provides examples of simple and complex affiliate models.