Where web merchants reward partners (affiliates) for sending converting web traffic to them.

Pay-per-sale is not customarily used for ad buys. It is, however, the customary way to pay Web sites that participate in affiliate programs.

The commission structure where the merchant pays a percentage or flat fee to the affiliate based on the revenue generated by the sale of a product or service to a visitor who came from a affiliate's site.

an advertising pricing model in which advertisers pay agencies and/or media companies based on how many sales transactions were generated as a direct result of the ad. See CPS.

Online advertising payment model in which payment is based solely based on qualifying sales.

An advertising pricing model in which advertisers pay agencies based on how many consumers actually buy something as a direct result of the promotion. Despised by agencies for the wretched accountability it brings to their lives.