I don't know about that. Just look at the webpages you see when you're on the web. See which have AdSense and which have other ads but not AdSense. If AdSense p

I don't know about that. Just look at the webpages you see when you're on the web. See which have AdSense and which have other ads but not AdSense. If AdSense pays the most, then most sites would have AdSense unless they were denied, suspended, or banned. There should be quality differences. Is there a pattern of quality differences between AdSense and other sites? I am not seeing one. The only ascertainable difference I see is -- heavily trafficked sites generally use AdSense, and sometimes have more than the maximum three ad units per page in the AdSense terms.