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Re: Logging out from Facebook

From: Karl Dubost <karld@opera.com>
Date: Sun, 25 Sep 2011 14:11:45 -0400
Message-Id: <43661C87-CC17-4238-B867-23985C7C6F9D@opera.com>
Cc: Noah Mendelsohn <nrm@arcanedomain.com>, Jeni Tennison <jeni@jenitennison.com>, "www-tag@w3.org List" <www-tag@w3.org>
To: "L. David Baron" <dbaron@dbaron.org>

Le 25 sept. 2011 à 13:59, L. David Baron a écrit :
> That said, I keep hearing about how sites are or may be using other
> methods to track users (flash local shared objects, fingerprinting),
> possibly in combination with each other.

Yup and each time we create a mechanism to block, the ads 
industry will decipher another hole for tracking users. 
It is a tough issue a bit like spam. On one side a powerful 
distributed industry which really wants to track users 
across sites; on the other side not enough people with a 
will (or conscience) to not be tracked. 

Interesting experiment of the day.
Start a clean profile of your browser 
(for example with Opera, you can do on the command line
   /Applications/Opera.app/Contents/MacOS/Opera -ps foo&

Then go to http://www.google.com/ads/preferences/view
Use the browser for one day, as you would normally do.
Then go again to http://www.google.com/ads/preferences/view
And it will shows how you have been categorized after one day 
of browsing on the Web and this only for DoubleClick 

Karl Dubost - http://dev.opera.com/
Developer Relations & Tools, Opera Software
Received on Sunday, 25 September 2011 18:12:38 UTC

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