I'm more concerned about the cookies placed by any member of the MSM like the NY Slimes if I stray into their site.
Twice a day, I use SBC/Yahoo's new cookie spotter and remove all new cookies. My computer runs much better.
The worse offender was AOL going back years when I was an AOL customer and used their so called free cds for AOL updates. Lets see AOL is owned by Time Warner which also ownes Slime Pseudo News and CNN.
I juse Firefox and every once in a while go through and remove cookies from those places I don't want (Tools:Options:Privacy:Cookies), checking the box "unless I have removed cookies set by the site" for when to allow cookies. By now, most of the MSM can't set cookies at all, while cookies from Free Republic and others I want remain.