g1smd - 9:03 am on May 26, 2012 (gmt 0) [edited by: g1smd at 9:09 am (utc) on May 26, 2012]
Unlike a lot of other privacy issues where the company holds the data in secret and it's a struggle to see what information they have and how they use it, cookies are stored on the users machine and the user has direct and immediate access to them. In particular, users retain full control within their browser to inspect and delete any cookie at any time.
It was a crazy situation to put the onus on tens of millions of websites to modify their behaviour instead of asking a couple of dozen browser makers to improve their cookie management tools. The simplest method is to change the browser default to "ask the user about each new cookie".
[edited by: g1smd at 9:09 am (utc) on May 26, 2012]