There are several types of affiliate programs. Most will pay you a flat rate or percentage of the sale you make (pay-per-sale). Another common type is when you're paid per action or lead. For example, if you refer someone who signs up for businesses free trial, the business pays you for the sign-up. Although not seen as often anymore, some will pay you per click (this is seen most in contextual ad programs such as Google Adsense) or per impression (each time the ad is loaded on your website).
It was by pure chance that I was reading an article written by a reporter. The article was about scams but at the end, offered the services of a Canadian Company. The company was called Wealthy Affiliate and they had been in business for 15 years and had at that time over 500,000 members and this somehow looked very serious. Today they have 760,000 members, which means they are certainly doing something right.
Also known as a publisher, the affiliate can be either an individual or a company that markets the seller’s product in an appealing way to potential consumers. In other words, the affiliate promotes the product to persuade consumers that it is valuable or beneficial to them and convince them to purchase the product. If the consumer does end up buying the product, the affiliate receives a portion of the revenue made.