Forum Moderators: martinibuster
I strongly suspect that if you are only seeing PSAs on a page, they are not counting as Impressions because there is no ad code executed which is what the FAQs indicate has to happen for an Impression to be counted.
I have verified that unpaid ads (PSAs) do in fact count as impressions. However, they do not count as clicks, which is intuitive since the target URLs are not on a Google domain like the paid ads.
I've posted this a number of times on this forum - I tested by limiting AdSense to a single page of a site which only showed unpaid ads and after several consecutive days of 4 figure impressions with 0 clicks it was clear.
Thank you Steve. That's what I thought. I personally believe that many of the fluctuations in CTR relate to how many PSAs are displayed.
Clark, for sites where a large percentage of impressions can be PSAs that's probably true. It was definitely true for one of my sites until I removed AdSense from hundreds of content pages which showed PSAs due to Google's algorythm considering content on those pages to be inappropriate (the site is about sex crimes).
Here's an August post where I discussed how I determined that PSAs count towards impressions. I also mention how it's probably technically possible for a reported CTR higher than 100%.
[webmasterworld.com...]
And here's an August post where I explained how "impressions" and "clicks" in AdSense reports are misleading and incorrect and my proposal for how Google should modify the reports.
[webmasterworld.com...]
BTW, I wish I had never had reason to discover that PSAs count as impressions. It's not uplifting to know that nearly all of your site's pages show PSAs due to what I consider to be a flaw in Google's algorythms (I don't want to get off-topic). But you shouldn't blindly trust that what I'm saying is true. Instead, take a very active page of yours, add some negative "trigger words" to guarantee PSAs are shown, remove AdSense from the rest of your site(s) and monitor the AdSense reports for a few days. <g>