Congratulations to our monthly contest winner for November, David Noble of Orangeville, Ontario. Applications using P3P will keep users informed about web sites' privacy practices, and allow them to dictate the extent to which their personal information is revealed to the site. Technically, P3P consists of an XML vocabulary, a strongly defined set of base data types, and a rule-based language that acts on a set of rules used to express a user's preferences.
Web sites express their privacy practices by means of a policy .
An example policy can be seen on the W3C's site. On that basis the policy may be accepted or the user prompted to reject it.