The Simple Solution to Tracking and Privacy Concerns in Advertising
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I actually tracked down a version of Opera 5 (from 2000) and installed it in a VM, here's a screenshot of the ad preferences: http://666kb.com/i/c69ez5xf671f79fk4.png
As you can see, it's more or less what the article suggests. Opera gave up on the idea after 5 years - but then again the (worse) feeling of being tracked by everyone and everything didn't exist back then.