Nightingale explained that Firefox 4's DNT, when enabled, sends an HTTP header that says, DNT=1, which means: "do not track me."
"It's up to the ad networks whether they respect that or not, but this point it's a signal we never had before," Nightingale said. "We know it will evolve but we just wanted to start the conversation with a simple binary expression that I want to be tracked or I don’t want to be tracked.
Right ... knowing ad companies, I know exactly what they will do with it...
I mean why would they try as hard as they possibly can to shove ads down my throat, and then suddenly see that I don't want ads and respect that ? Come on now, let's be serious. There are even site that I can't visit (without some workarounds) because I have adblock installed and the ad companies don't like that...