Sure, but in a fixable manner. I can always turn on third-party cookies if I like.
A faked P3P header breaks IE's privacy settings in a nonfixable manner.
A faked P3P header breaks IE's privacy settings in a nonfixable manner.
Not for the average user. The user who uses the default web browser. The user who uses IE.
I suspect you're right and the uptake isn't what they wanted, but that's not really a valid reason for them to work against the browser settings designed to protect a user's privacy.