> Targeting any more specific than a good contextual match is usually a waste and not any more effective. I'd like to believe this. But why then does user trac

> Targeting any more specific than a good contextual match is usually a waste and not any more effective. I'd like to believe this. But why then does user tracking adtech exist? Why is the advertising industry opposed to this move to limit user tracking? Advertisers (the ones paying $ for adtech) are conned? Can you point at evidence for your claim?