My question is... how is that supposed to work? How do they turn "person A's credit card account" and "person A's Google account" into something comparable. To say "X customers saw the ad and then purchased it", you've gotta be able to be able to confirm that the same person is on both sides of the dataset, which is a pretty hard problem even without it allegedly not sharing the info on one side with Google.

I guess this complaint from this article is asking the FTC to get more information on this process, or get Google to explain how it works, or something.

Upvote for the explanation.