I read an artilce that said it had a list of 500 advertiser URL's who pay low CPC for their ads on adsense. So if you block ads from these advertisers from being shown on your site you can increase your cpc. Adsense allows users to do this, so its legit, but adding 500 urls? Would this be seen as suspicious or wrong, or allowed by them because they have no set max limit to number of url's you can block. anyone tried this, does it increase CPC?