New User from US
joined:Mar 19, 2018
A few days ago I renamed a few of my best performing ad units in order to better identify them. I also created 4 additional ad units of the same size in order to better track Revenue, RPM, etc across our three most highly trafficked page templates. These new ad units were placed in the exact same spots as the old ones, so ad size and placement are unchanged. Only the ad units themselves are new.
Yesterday after the change was made, we had a huge drop in page RPM but ad impressions and page views remained unchanged. This indicates to me that simply creating a new ad unit may cause the ads themselves to target users less effectively and thus result in less clicks. has this happened to anyone else? Does it take time for Adsense to "learn" which ads to serve even though it should theoretically already know what ads to serve users based on the domain and other ads?