Troubleshooting P3P : Basic principles
Troubleshooting P3P may sometimes be very frustrating. There are thousands of mail messages that are posted on the www-p3p-policy mailing list from the webmasters that are working on enabling P3P on their web-sites, but have run into difficulties. In some cases, people simply do not understand the way P3P works, but in other cases the webmasters have partially enabled P3P, but with some details not right.
The first thing that must be done, after enabling P3P on your site, would be to check it, to ensure that this implementation is correct.

