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CRT decline compared to June 2017

     
5:30 pm on Jul 1, 2018 (gmt 0)

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50% of my visitors have the resolution 360x640 and 375x667; the visitors are the same as in June 2017 but the CRT is down 35% for both resolutions.


The position of the banners is the same as last year, what could be the problem?


thank you
5:39 pm on July 1, 2018 (gmt 0)

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Changes in browsers might be one element. AdBlockers have been added to just about every common mobile browser and some are turned on by default, without the users being aware. See this current discussion about adblockers on mobile MS Edge browsers for Android and iOS: [webmasterworld.com...]
6:32 pm on July 1, 2018 (gmt 0)

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Changes in browsers might be one element. AdBlockers have been added to just about every common mobile browser and some are turned on by default, without the users being aware. See this current discussion about adblockers on mobile MS Edge browsers for Android and iOS: [webmasterworld.com...]

If analis compares the CTR with the Ad Impressions , this is unrelated to ad blockers, since Ad blockers are also blocking impressions.
6:44 pm on July 1, 2018 (gmt 0)

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It appeared to me that analis was comparing CTR to number of visitors with those screen resolutions, not impressions. Of course I may have misinterpreted the question. I did not see a mention of impressions, though Dimitri is right, it would give a more accurate number to use.
7:12 pm on July 1, 2018 (gmt 0)

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when google adblock came out I checked the ad format that was blocking and everything was ok.

the ctr is down 35% but the cpc is higher, the final result is however for these 2 resolutions -15% of earnings compared to June 2017