Microsoft also unveiled a P3P-enabled version of Explorer and a P3P-readable version of its own corporate privacy statement.

CNN: Vendors huddle over privacy

The W3C intentionally made P3P a plain-vanilla standard and asked vendors to develop specific products on their own.

CNN: Vendors huddle over privacy

The Wednesday session will give those companies a chance to check out each other's P3P offerings and test interoperability.

CNN: Vendors huddle over privacy

W3C's P3P work is aimed at giving consumers more say in how their personal information is used, said Daniel Weitzner, W3C's technology and domain leader, in Cambridge, Mass.

CNN: Vendors huddle over privacy

Cranor and others said the cost and time investment companies will have to commit to in order to make their corporate Web sites P3P compliant will be minimal.

CNN: Vendors huddle over privacy