How successful is the Affiliate Internet Marketing?

Affiliate marketing is considered the single fastest growing industry on the Internet. It is also tagged as one of the fastest and most creative ways to make money, job and career online. Many internet businesses grew bigger than the existing offline businesses. And affiliate marketing has been playing a major role to these successes. Most of the online businesses, including the makers of the world's top brands, outsourced an affiliate management companies to manage their affiliate programs.