As WordAds sites likely saw, in September we began to report ad impressions together with your earnings. Previously, WordAds sites looked at their page views to make a rough calculation about how many ads they were serving.
Some sites have asked why WordAds does not serve ads on every page. We share your interest in running as many ads as possible, however, there are a few reasons we cannot.
1) Ad blockers. The number of ads blocked by ad blockers that site visitors have on their computers varies, but we have seen estimates that 20% of ad impressions are blocked by ad blockers.
2) Ads not viewed. Some site visitors might bounce from your site quickly after arriving. This will count as a page view for you but if they don’t scroll down to see an ad it won’t count as an ad view.
3) Normal ad server discrepancies. There…
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