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It's on a per-tracker basis. For an ad provider to see a given topic it must have been embedded in a site with that topic. In GP's comment "site X" is referring
by ericpauley 3y ago
It's on a per-tracker basis. For an ad provider to see a given topic it must have been embedded in a site with that topic. In GP's comment "site X" is referring the site being embedded, not the top-level site. Again, this is reducible to third-party cookies.