Earlier quoted context omitted.
> I think rather than squabbling about DNT, browser vendors should be taking much more aggressive, technical steps to make tracking users harder Exactly. Do Not Track is unenforceable. We need Cannot Track.
You already have it. Use the following Chrome extensions: NoScript, AdBlock, Ghostery and Do Not Track Plus. There's no sense in relying in any of the large companies to voluntarily give up ad revenue, you need to take matters in to your own hands.
But that does fuck all, apart from making me guess which third-party requests are instrumental to making a page I'm visiting for the first time properly, until it's some sort of concerted effort at a default behavior for browsers so that websites are coerced to adapt to it to stay competitive. So it's up to those with browser marketshare.