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What is PICSRules? PICSRules is a language for expressing filtering rules (profiles) that allow or block access to URLs based on PICS labels that describe those URLs. The purposes for a common profile-specification language are: Sharing and installation of profiles. Sophisticated profiles may be difficult for end-users to specify, even through well-crafted user interfaces. An organization can create a recommended profile for children of a certain age. Users who trust that organization can install the profile rather than specifying one from

The idea behind the system is that sites create P3P files describing their privacy policies, which can easily be read by browser software. Visitors set their own privacy preferences on their browsers, and if those preferences and the policies of visited sites match up, everybody is happy and the system stays in the background. If they don't match, the browser can point this out and ask the user what to do. It can also prevent actions that would otherwise happen automatically, for example it can block cookies if the user's preferences don't match the

The elements of a P3P-enabled web-context are as follows: * personal data use and disclosure preferences expressed by web-users. A preference is a rule, or set of rules, expressed by a web-user, that determines what action(s) a user agent will take or allow when involved in a conversation or negotiation with a service. A preference might be expressed in conventional text, or as a formally defined machine-processable statement; * personal data use and disclosure practices expressed by web-sites. A practice is a P3P clause expressed by a web-site that

P3P (Privacy Preferences Platform) was established by the World Wide Web Consortium (W3C) to provide internet users with a sense of privacy when surfing the internet. W3C is the official web standards body, which essentially attempts to bring law and order to the Internet. P3P started to allay consumer concern about the amount of data collected by web sites. The idea is that any site gathering information about its users should state why it wants the information, and how long information will be retained for. For example: "We are monitoring these