Google + Double-Click = Even Less Privacy
By Adrian Sutton
So everyone knows Google has a vast amount of data about you and that Google tracking cookie that basically never expires. Now they own Double Click, completely with it’s own tracking cookie that tracks you on pretty much every site on the internet.
Essentially, Google now know what you search for, which links you follow and now between Google AdSense and Double Click, they probably know everything you do on that site pretty much regardless of which site you pick.
Basically, they know everything you do online. Your ISP would probably have a more complete picture of where you go on the web, but Google has that for pretty much everyone on the web, not just the subscribers of one ISP.
Google now owns the internet.