Earlier quoted context omitted.
Really? What header does your browser send to my server informing me that you are blocking ads so that I know to deny you my content?
Response 1: whether this question already has a technical answer that you find satisfying does not affect whether using an ad blocker is theft. Response 2: a few sites are already popping up messages asking you to turn off your ad blocker, which is at least a partial existence proof. Response 3: if you want to know whether I got your ads, use cookies or make the request url unique to me, and then check that your ad s…
Sounds like the type of negotiation the mob engages in. But, hey, as long as you get what you want, I guess it is ok.