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Time for adblockers to become smarter. IMHO, an adblocker should keep a shadow DOM, so that the originating site cannot see which DOM elements have been removed/altered. Also, an adblocker could use a "refresh cookie" strategy, to effectively disable tracking.

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Methods of both parties will evolve, but ultimately as long as the user has control over his computer(no hardware DRM), he can display whatever he wants.

Here's a nice project idea. Visit a page using multiple cookies, then run OCR on it to extract the texts from each visit. Then compare the texts, extracting only the parts which are equal across visits. This should get rid of targeted ads and ads which vary on each visit. For the remaining ads, use a spam filter, or use a crowd-sourced database of ads.

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