I’ve seen various discussions that have confused or equated privacy (or freedom) with anonymity. Things such as social DRM which marks items with some unique information. There a nice article by Schneier on the differences and relation to security that is worth reading.

That’s obvious and uninteresting, but many of us seem to forget it when we’re on a computer. We think “it’s secure,” and forget that secure can mean many different things.

The article goes on to discuss the Tor software.