Ever since May 2008, when Google began supporting third-party cookies as part of the DoubleClick acquisition, Google has been asking AdSense publishers to update their privacy policies to include language that third-party cookies are in fact utilized. Then, more recently, Google started behavioral targeting ads and asked publishers again to update their privacy policies.

A new wave of AdSense publisher account bans has been spotted in the discussion forums and some believe this is due to some publishers not updating their privacy policies. A Google AdSense Help thread has discussion around this theory. One “Top Contributor” said:

But do you think Google is really banning accounts over not having the proper privacy policy?

We recently polled our audience to see how many have updated their privacy policy for AdSense and currently, most have said they have not. If you have not taken the poll yet, please do and I will publish the results later this week.

Forum discussion at Google AdSense Help.