i. You will use Product Advertising Content only in a lawful manner in accordance with and within the express scope of the terms of this License. You will not use PA API, Data Feeds, or Product Advertising Content with any site or application, or in any other manner, that does not have the principal purpose of advertising and marketing an Amazon Site and driving sales of products and services on an Amazon Site.
The concept of affiliate marketing on the Internet was conceived of, put into practice and patented by William J. Tobin, the founder of PC Flowers & Gifts. Launched on the Prodigy Network in 1989, PC Flowers & Gifts remained on the service until 1996. By 1993, PC Flowers & Gifts generated sales in excess of $6 million per year on the Prodigy service. In 1998, PC Flowers and Gifts developed the business model of paying a commission on sales to the Prodigy Network.