Affiliate marketing is probably 80 to 90% of performance based marketing. Affiliate marketing has been around for over 10 years and it really just started as a way to compensate referrers who are sending business through to various types of websites. It actually started in the adult space, but it quickly grew into the mainstream space and a lot of it has evolved with various networks and tracking platforms. So what should you do as a merchant or advertiser looking to launch into affiliate marketing? You should launch on a major network. If you are a merchant or a website owner and you are selling products or generating leads, you should launch on one of the major networks if not more than one.