This plus the third-party cookie apocalypse means advertisers are going to need to seriously reconsider the entire approach of personalization and targeting. For all of the billions and billions of dollars poured into ad-tech, I really don't buy that this stuff is any more effective than manually chosen or page contextual display ads. Maybe for juicing a few short term points on an A/B test, sure. But has anyone seri…
I further suspect a whole lot of the ones it’s very-good for are scams, or scam-adjacent.