If you use AdSense you may be wondering how to find out about how to determine your AdSense coverage of the ads that are displayed on your pages. By coverage I don’t mean what percentage of your pages includes AdSense, I mean what percentage of the ads displayed are not public service ads (PSA).
When a PSA is displayed in one of your AdSense units you don’t receive any money when a visitor clicks on that PSA. With the new AdSense interface, it is very easy to find out what percentage of your ads display actual ads, and not public service ads.