At the end of the day Google is really not the company you have to be worried about - it's the ad networks. They are the ones implementing zombie cookies using

At the end of the day Google is really not the company you have to be worried about - it's the ad networks. They are the ones implementing zombie cookies using the 10 or so methods of storage and the ones that directly sell your information to even seedier companies. I used to work for one so I know what goes on. This will always be a dance between smart developers usurping tracking efforts and smart developers coming up with new tracking methods. I really don't understand the extreme sentiment that your info via cookies is the worst form of privacy breach there is. Why would you not be more concerned with the companies that charge $.50 per call to access an API that can fetch information on anyone that fills out a form ("Oh I never knew my neighbor only makes $48k a year")? I guarantee you these companies know more about you than Google, Twitter and Facebook (unless you post every thought ever, of course). Case in point, they knew my coworker's wife at the time was 4 months pregnant. Unless you can derive such information from searches (doubtful and completely not worth the effort) then this information obviously came from elsewhere. Perhaps, for instance, like the doctor's office.