That's simply not the point of DNT. It's entirely voluntary server side, so it will never be useful if it's opt-out. It should be opt-in, as the spec says. Mic

That's simply not the point of DNT. It's entirely voluntary server side, so it will never be useful if it's opt-out. It should be opt-in, as the spec says. Microsoft made DNT useless on IE to get some good PR.