I liked the info when I went here: http://www.networkadvertising.org/managing/opt_out.asp

See: http://events.adchemy.com/visitor/auuid/nai-status?nocache=0.8290456
Only active cookie I had was for Yahoo: Yahoo! Ad Network
(now including Dapper)
But I won’t probably get an extra point from the yourbrowser matters guys,

polonus