By Dr-Pete

Posted by Dr-Pete

For the past couple of months, Google has been testing SERPs with 4 ads at the top of the page (previously, the top ad block had 1-3 ads), leading to a ton of speculation in the PPC community. Across the MozCast data set, 4 ads accounted for only about 1% of SERPs with top ads (which matches testing protocol, historically). Then, as of yesterday, this happened:

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Over the past 2 weeks, we’ve seen a gradual increase, but on the morning of February 18, the percentage of top ads blocks displaying 4 ads jumped to 18.9% (it’s 19.3% as >> READ MORE <<

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