Is the Google Cookie Tracking Everyone's Surfing Habits?

Photo: Google Cookie by Massless on Flickr
Note update from Google at the end of this post.
Google tonight made an important change to the Google Ad Planner that - at least as I read it - means they are now tracking every site you visit via a Google cookie and serving the aggregate data up to advertisers. If I am wrong I hope someone will tell me. (If this post is wrong I will correct it - but this is how I am interpreting what Google has put out there so far.)
Let's take a look at the facts.
First, Google yesterday made some subtle changes to its privacy policy. Coincidence? Maybe.
UPDATE 1/30:: A Google spokesperson emailed in the following statement in response to my post...
"Google does not track users in the manner described in the article. We do not track every site every Google user goes to, nor do we have the capabilities to track in this manner.
The updates to our privacy policy made on Wednesday refer to data collection only for the purpose of detecting and preventing fraud or other misconduct; Google Ad Planner is not using any of this data in our enhanced features. There is no relationship between our updated privacy policy and our updated Ad Planner features."
Seems to make sense. However, it doesn't explain where the cookie data comes from. Others point out in the comments that Google has a lot of cookies sprinkled across the web through Doubleclick, etc. and that - in theory - they could triangulate the data. I have emailed Google to see what I can find out.















