Comment by tialaramex

Its proponents will tell you this doesn't have any tracking in it. Fully anonymous. Only the advert's ID gets passed along to track conversion.

Who knows who could have clicked this advert, with the ID "Advert-presented-to-ugh123"? Could have been anyone. We've successfully masked out any tracking, hooray for Apple.

Also I don't know enough about in-app and app-to-app advertising, but I'm surprised if the mechanisms described are sufficient to keep everybody honest.