Well, the "Do Not Track" option is too simplistic and probably needs improvements.
Ideally, the browser would start by making an OPTIONS request in which the server would reply with something like "yes, I'll track this user in spite of their preferences" (even with a link to their privacy policy) and then the browser could block the view with a warning, just like how Chrome and Firefox are giving warnings for insecure connections, giving users the option to add exceptions or to go somewhere else.
Ideally, the browser would start by making an OPTIONS request in which the server would reply with something like "yes, I'll track this user in spite of their preferences" (even with a link to their privacy policy) and then the browser could block the view with a warning, just like how Chrome and Firefox are giving warnings for insecure connections, giving users the option to add exceptions or to go somewhere else.
This would be fair to both users and publishers.