But it still doesn't apply here. At most they could cross-reference it with a public Steam profile that has the game listed as owned after the purchase (actually, I doubt they would have the account ID to prove it for sure, but with enough purchases they could likely figure it out), but by then you've already sort of revealed to the world you bought whatever embarrassing title yourself.

is there somewhere i can read more about this? this is very troubling information depending on the depth and scale of implementation.