>Your missing the point and I was talking in generalities. But no matter. Microsoft does NOT bind IP address to email address, does NOT scan emails for advertising keywords. Microsoft does not track personally identifiable information.

If you define "personal" as "related to the same machine", then all those calls home made by the OS, installer and whatnot are clustered around the same user or at least same machine. Microsoft does it differently, but still does it. And, if there's no personally identifiable information, why is it then encrypted?