DNT is a mirage.
Begging the crooked frauds running the advertising industry not to track you is just micturating in the direction of the prevailing wind.
Even the ICO don't comply with DNT requests. So who are you going to complain to if the ad industry laugh in your face when you discover you've been taken for a fool?
Like the ludicrous cookie law.
There is a much simpler solution that the ad industry don't want... Outlaw the creation of surveillance databases of personal data & communications data without the explicit consent of data subjects.