ClickBank is one of the granddaddies of digital product affiliate marketing. Throughout the years, ClickBank has spawned a large number of competitors, but nothing can beat the original. If you are looking for an affiliate program that offers digital products across a very wide range of niches, you can''t go wrong with ClickBank!If you want to succeed with affiliate marketing, you must first build your business.You have to build it on the right niche.