Privacy Bird?
A. A browser-add-on, AT&T’s privacy bird (http://www.privacybird.com/), that I’m playing with is a lot more aggressive in supporting p3p. If Privacy bird doesn’t see the P3P: header, it then requests the “well known” file, /w3c/p3p.xml file and gets nailed by ntop as a hostile application, since we don’t have support for returning .xml files (yet).