As I recall, some provided links to opt out here and there, and also giving advice on particular cookies to watch out for.
But the following article gives the real thing - 2 web pages that completely analyze your ad dependency and present a way to opt out of all these hyper-commercial data gathering monstrosities.
Here's my own score, which frankly got me more than a little spooked!
Go and test your own "degree of privacy breach" after the break.