Affiliate Marketing is a method of selling products or services by marketing them within the content of your websites, Emails, Blog Posts or Social Media Posts. Affiliates earn a commission from their advertiser partners (merchants) for every sale or other pre-agreed action, such as subscription, delivered through their efforts. This method is called performance-based marketing or pay-per-action marketing (PPA). It is a modern variation of the practice of paying finder’s fees to individuals who introduce new clients to a business. Compensation can be based on generating sales, completing forms, or signing up new customers.