ken_b - 1:49 pm on Jun 7, 2012 (gmt 0)
Not counting the daily clawbacks They reclaimed 17% from me. The daily clawbacks were less than in April, but still reclaimed another few percent for the month.
I had hoped they had this under control, but maybe not.
AdSense TrafficTeamGoogle Employee
This is Andrew from the Ad Traffic Quality Team at Google. We're aware of a problem with a third-party crawler in the network that is generating invalid activity across a number of different publishers. We've recently made some changes to our filtering so that this invalid activity will be excluded more quickly from your earnings reports and the discrepancy between estimated and actual earnings will be smaller.
Invalid clicks problem - Possible solution [productforums.google.com]