Last night, Google began emailing AdSense publishers about their new terms of service to cover the recent behavioral targeting changes to be made to the content network. The email I have a copy of is sent to a Danish publisher and he used Google Translate to translate the text. Here is a copy:
...Following this announcement, your policy on privacy now reflect the use of interest-based advertising. Please review the information on http://www.google.com/adsense/support/bin/answer.py?answer=100557&hl=da to ensure that your site's policies for protecting personal information has been updated and make any necessary changes before 8 April 2009. Because publisher sites and laws vary across countries, unfortunately we can not propose a policy to protect personal information in a certain language...
I personally did not receive this email yet, but there is a lot of discussion at Google AdSense Help and WebmasterWorld around this update.
Yesterday, when I covered this news, I asked if publishers will be able to control if the ads are triggered from the interest categories or not. Google answered that question now, saying yes, they can control it.
So you need to make sure that your site's privacy policy is in accordance with the terms of service to run AdSense ads. You can learn more about that at this document at Google. Google actually asked publishers in the past to make sure they had a solid privacy policy, when they began serving ads through DoubleClick.
Forum discussion at Google AdSense Help and WebmasterWorld.