| But what exactly are they (or any of them for that matter) tracking?
Just
| the sites we visit? I think you're saying they have access to our real
| personal information, but I'm not sure how - or what - they can get.
|
They're tracking enough to be worth selling. There are
repeated articles about that. There was one just the other
day about phone metadata:
http://webpolicy.org/2014/03/12/metaphone-the-sensitivity-of-telephone-metadata/
That article's interesting in that it shows a number
of examples of types of information that could be
potentially problematic if exposed.
There have also been articles and studies about how
"anonymized" data can be easily de-anonymized. A well
known example is here:
http://www.nytimes.com/2006/08/09/technology/09aol.html?_r=0
(Note you'll have to allow the NYT to set a cookie
and track you if you want to read the article.)
Last week there was a 60 Minutes piece about selling dossiers
of individuals. They're not talking about targetted ads
using "anonymous" data. They're talking about knowing
as much as possible about each individual, and selling
that information to anyone who will pay for it. A number
of large companies with names like Axciom are in the
business of doing just that.
Much of the tracking can be done via normal browser
usage using web bugs, cookies, etc. You don't have to be
logged into Google or Facebook. There are numerous
3rd-party connections on most commercial websites. If
Google/Doubleclick has an ad on each site you visit, for
instance, they can track you everywhere you go. Akamai
can do the same thing by tracking IP addresses, even if
you disable cookies, script and 3rd-party ads.
The whole point of computers is to organize, manage
and work with data easily. There's no such thing as
anonymized data. There's just a growing body of collected
facts being organized by companies and governments to
know as much as possible about peoples' activities.
Comcast actually applied for a patent some time ago
for a mechanism to watch people watching TV, via their
cable box, in order to better target ads.
It goes on and on.... The information is out there for
anyone concerned, but I think most people hold your
view that it's not worth getting worked up about.