greatstart - 6:49 am on Jun 21, 2013 (gmt 0)
I just saw this today in my account:
We detected a 83% fall in earnings on your account
Your earnings on June 17 were 83% below forecast. This may indicate an issue with your site that you should investigate. We detected the earnings drop by comparing the money you earned to a forecast for your account.
I'm looking into it now. Very interesting new feature.
More info on it - [support.google.com...]