A WebmasterWorld thread reports Google has been sending warning notifications to some publishers via the AdSense console. The publisher said, "I just happened to log into adsense today and noticed a warning from yesterday about adsense on some adult focused pages." He even posted the warning:
Google AdSense: You have 3 working days to make changes to your website.
This message was sent from a notification-only email address that does not accept incoming email. Please do not reply to this message.
Hello, While reviewing your account, we noticed that you are currently displaying Google ads in a manner that is not compliant with our policies. For instance, we found violations of AdSense policies on pages such as *********Birmingham_Fun:_An evening_with_an_Escort_Girl. Please note that this URL is an example and that the same violations may exist on other pages of your website. As stated in our program policies, AdSense publishers may not display Google ads on pages with adult or mature content. While we understand that it may be challenging to monitor user-generated content, such as comments, on your site, we require publishers to check that the webpages containing their ad code complies with our program policies. Please make any necessary changes to your webpages in the next 72 hours. We also suggest that you take the time to review our program policies (https://www.google.com/adsense/policies) to ensure that all of your other pages are in compliance. Once you update your site, we will automatically detect the changes and ad serving will not be affected. If you choose not to make the changes to your account within the next three days, your account will remain active but you will no longer be able to display ads on the site. Please note, however, that we may disable your account if further violations are found in the future. Thank you for your cooperation.
Sincerely, The Google AdSense Team
Issue ID# 1000033 ----------------
For more information regarding this warning email, please visit our Help Center: https://www.google.com/adsense/support/bin/answer.py?answer=113058.
Indeed, there is some interesting information in the help center about these notifications. They have them broken down into three groups:
Have you ever received a warning from Google? If so, were they different from the three listed above?
Forum discussion at WebmasterWorld.