Excellent point - you could monitor the ABP database and if the hash appears, modify the content (shifting the value slightly on a single pixel) so the thieves need to block the new one.
I assume by thieves you mean ad networks, because I never agreed to retrieve their content, let alone view it.
Its an arms race, as always. And just as the media industry couldn't beat piracy, ad networks aren't going to beat blockers, even if it means content producers get their content stripped and distributed via other channels.
Its an arms race, as always. And just as the media industry couldn't beat piracy, ad networks aren't going to beat blockers, even if it means content producers get their content stripped and distributed via other channels.