Visa/MC/Amex will literally sell your transaction data to almost anyone
There was an article linked on HN last year which indicated that Google gets 80% of all card transactions. My guess is that it's more by now.
There was an article linked on HN last year which indicated that Google gets 80% of all card transactions. My guess is that it's more by now.
So even with Visa/MC/Amex - 'you are the product'.