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-- Google AdSense
---- April 2013 AdSense Earnings and Observations
ember - 1:45 am on Apr 3, 2013 (gmt 0)Thread source:: http://www.webmasterworld.com/google_adsense/4560341.htm
I think they are always tweaking and tinkering behind the scenes, always trying to improve things, and sites get caught in the experimentation. Doesn't mean anything nefarious is going on.
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