opt-in for ads industry

Interesting thing I met today 

    "We’d prefer a totally opt-in system, but, 
     as far as we know, the ad industry doesn’t 
     have a practical one as of now."

Screenshot: http://www.la-grange.net/2012/03/05/tracing-cookies
Web site:   http://allthingsd.com/

-- 
Karl Dubost - http://dev.opera.com/
Developer Relations, Opera Software