All of the people who

All of the people who are so paranoid about their information being collected by the supermarkets should consider this idea which I just came up with. If a website was set up where you could select your supermarket, and then send in the bonus card that you signed up for and received, and in return receive another bonus card for the same chain from some other random person around the country, that would throw off their tracking quite a bit.
Donkeymon offered this up on metafilter but it's too good an idea to leave there. Unfortunately, it's never gonna happen -- but what could happen is I could go to the grocery store and try to trade cards with random shoppers while picking over peppers, considering cereal, ferreting out frozen foods, or lingering in line. Even better would be to get a few friends to each sign up for a handful of bogus cards at a few different stores several weekends in a row, and then hit the parking lots passing out Anonymous Shopper cards, proclaiming "You own your history, habits, choices and tastes! Subvert the economy that profits off of your private life!" Can you believe that Whole Foods Market has the gall to call them "loyalty cards"?
randomWalks @randomWalks