Privacy compared to anonymity is something that I constantly explain to clients. They often think they are the same thing and if you have one, you have the other. This is very untrue however.
This article by Bruce Schneier, is really well written. It talks about tor and the recent release of e-mail addresses by an individual that was watching tor exit nodes. More to the point of this entry however, it explains very well the difference between privacy and anonymity.
