Whats up with P3P?
A. P3P is a W3C recommendation – http://www.w3.org/TR/P3P/ – for specifying how an application(typically a web site) handles personally identifiably information. What information the site collects and what it does with the information. p3p is pretty complex! There are basically two ways to enable an application for p3p. One is to add another HTTP header, P3P:. The second is to support a well-known file location, /w3c/p3p.xml (like robots.txt). Browser support is pretty spotty, as is web site adoption. Some 3rd party browsers have some support… up to CrazyBrowser which claims “full support”, whatever that means…