I will have to disagree with you on that statement. I have in the past logged user accounts,and that includes vista windows too.
As far a "Cyber Cafes", i have somebody logged using a cyber cafe, and for over 2 years now,i still get logs from "everybody" who uses that particular PC on the cyber cafe.
If i was into doing damage and messing with people,i could have already in my possesion over 2,000 email adresses and accounts from myspace,facebook,hi5,photobucket ect.