mr sqk0612 sir, can't agree more. new version just out. installed it on TCS/fobotcso recommendation. blocks an oz.valueclick every time on pprune.
you can add your own blocks in IE6.0 via tools, internet options, privacy, edit, then input the name of the offender, eg 'valueclick.com'.
if you open up the cookies in notepad, you can copy and paste the offending address.
also from that earlier thread on hidden data mining, ozpax mentioned how much info was taken from website visitors. what i couldn't get him to expand upon can be found here
http://www.privacy.net , make sure you visit these bits,
http://www.privacy.net/logfile/ and
http://www.privacy.net/track/ . fascinating stuff.
that pprune take a proper interest in their advertisers, and methods, is much to their credit.