Clickbank does a lot of things right. They're system for selling ebooks and digital content is as easy as it gets. They pay their affiliates twice a month. They also make it easy to figure out what is selling best in their network with their "gravity" rating for all of their sellers.

Clickbank isn't perfect. Their system can be a bit awkward at times and their ability to only sell digital products limits them (at times), but they are great to have in your affiliate marketing toolbag.

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