Originally Posted by ZENRA

Well said.

That and there's also the fact that tube site navigation can be pretty rough. There's the highly compressed videos, the pop-ups, the pop-unders, etc.

A good paysite will have none of that. It will have the content the surfer wants in an easy to browse manner. The video/picture quality will be high and there should be zero ads for anything else that would distract him in making the purchase.