Founded in 1998, ClickBank is a secure online retail outlet for more than 12,000 digital product vendors (in their dictionary, they call advertisers as vendors) and 100,000 active affiliate marketers.
ClickBank makes a sale somewhere in the world every three seconds, safely processing more than 26,000 digital transactions a day. We serve more than 200 countries, and are consistently ranked as one of the most highly-trafficked sites on the web.
Joining here is free and easy. As an affiliate, they don't require you to put your web site informations here too. That means, if you have multiple web-sites, then you can simply use your single affiliate account throughout all the sites.
Their commission rate varies from advertiser to advertiser. It can be anything upto as high as 75% of the sales amount. This depends on how much the corresponding advertiser is willing pay their affiliates.