Is P3P designed to replace cookie blocking software or anonymity tools?
No, P3P is complementary to cookie blocking software and anonymity tools. In fact, some of these tool vendors are building P3P into their products. P3P can offer users who want to selectively block cookies an opportunity to learn more about how each cookie will be used and direct their software to automatically block cookies that will be used for certain purposes while accepting cookies that will be used for other purposes. Anonymity tools are useful at sites where users have no reason to supply any personal information. However, when users wish to supply this information in order to complete a transaction, P3P is useful for informing users about how their data will be used. This is not a function performed by cookie blocking software or anonymity tools.
