Merchants often make affiliate partnerships with companies (or individuals) who have what it takes to promote the merchants products/services to a large number of potential customers. In return, merchants give the advertisers a percentage from each successful sale. This is something that in the affiliate marketing world is commonly referred to as commission. Commission structure depends on a lot of factors, including the number of customers, time frame, and so on. One of the biggest advantages of commission-based affiliate partnerships is that it encourages the affiliate partner not just to spread the word about the merchant, but more importantly, to convert the website visitors into paying customers.