Most deep tracking done these days are not by means of ads being served, as the advertisers themselves lack the means of doing any meaningful analysis and don't have the reach, but rather tracking is done much more efficiently by very common utilities, like by Google Analytics, or the Facebook Like, Twitter's Tweet, or Google's +1 buttons. Heck, any third-party service can be a very good tracker. Are you also blocking Gravatar and Disqus? Because you should.

And nowadays you've got an "advertising ID" being exposed by the operating systems themselves, an ID that all apps can use to track your behavior across the net. I know of at least Windows 10, iOS and Android that do this. And this is actually a step up, as before the "advertising ID" apps were using much more persistent forms of identification.

And I'm all for being privacy conscious, personally I'm downright paranoid. But lets be honest, ad-blocking isn't about being privacy conscious.