As for super cookies, thats a litttle more of a grey area.
In the past many secuirty groups and org's have reported about super cookies and how they can see all.
Since then a number of have realized short comings with the theory's, and downlisted the the super cookie to some type of other bug or secuirty hole.
Most noted was Gibson who went on a farce about how a main stream ISP was using a form of super cookies in its custom version of IE. Gibson, a leading secuirty expert later retracted his staements upon learning the super cookie was only tracking net settings or changes customers might make to theif band width.
It was not collecting personal info.
For the latest scare all, get off the net super cookie warning that has come out, see this very well crafted web site...
http://www.computerbytesman.com/priv...cookiedemo.htm
There is a fix provided aswell.
Bottem line is no super cookie has been found that gives anyone 100% history and in depth info on a user. One would be just breaking in the damn box, and dropping a key logger.
Alas, there are also other means aswell. Many, many other means to gleam personal info. Simply because programmers get lazy or bad code gets executed by the end user. Some where, out there, at this very minute 100 so people are leaking personal data due to stupidity, rather on there part for opening the email attachment "torjan.exe" or because of stupidity on microsofts part.
Regardless one should use common sense and not give the credit card numbers out on line, or keep your membership info to porn sites in your email box, or any other sensitive type of info.
If you wont post it on your front door, then dont put it on your computer.
sage advice.
Kinda like this tid bit from conf.
"Man who marries girl with no bust has right to feel low down."