Affiliate marketing is an arrangement between a merchant (also known as a “vendor” or a “retailer” or a “brand” or “someone who is selling something”) and a publisher (also known as an “affiliate”), to whom they pay commission to for traffic and/or sales generated from their referrals. According to Wikipedia, this process has four key players: the merchant, the publisher, the network, and the customer. Clickbank provides the four elements for anyone to start making passive income from home fast.