Is there a cap on Ad Impressions?
I beefed up all of my top-performing posts so that they accommodate more ad impressions. However, both long-form articles and short-form ones get almost same number of ad impressions. Why is this happening?
For example, look at the below pictures. While the first article has around 51 subheadings (formatted as per Mediavine's recommendations), the second one has only 7 subheadings. However, both posts get only 19 impressions per pageview.
I also scrutinized my Google Analytics and found that the long-form post has an average engagement time of 26 seconds, while the short one has only 11 seconds. So it is clear that the visitors to the former are scrolling deeper and reading more. Given such a scenario, why the long-form post has fewer impressions? Please explain.


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Hey @CV - This score reports the average number of in-content ad impressions seen per pageview. There isn’t a cap on how many impressions can serve per ad slot or how often a particular ad unit is refreshed, but we do abide by CBA standards when it comes to how many ads are served per post.
CBA guidelines ensure that ad content can not be more than 30% of the total page height.Journey by Mediavine In-Content Ads are placed using Coalition for Better Ads (CBA) standards. Even if your in-content settings were cranked up to their highest options, you wouldn’t go past those guidelines.
If you want to really dig into how users are interacting on your site, you can always test out a Heat Map. Just keep in mind that they can slow your page down a bit so we'd recommend only trialing them for a short amount of time.
Using a Heat Map on your posts can tell you how your readers are interacting with it, what links they are clicking most, how long they stay on the page, and where they're dropping off. 0 -
Hi Mary, thanks for your reply. But why does a page with a higher engagement time (26 seconds) get the same number of impressions as a page with a comparatively low engagement time (11 seconds.)
I understand the concern of "ad content can not be more than 30% of the total page height." But the post I am talking about has a great height with 51 subheadings, 50+ pictures, and around 150 paragraphs (optimized exactly as MV suggested). Clearly there is enough room to display more ads.
So my question is very simple - when a user is scrolling deeper, spending more than double the time as against another post, why not show him/her more ads than what a page with 'low page height' and 'low engagement time' gets? What is stopping the system from doing so? Am I missing something?
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