Weren't the cards supposed to be so that the company could "target" advertising to you?

But I haven't heard of anyone with the cards receiving anything of this nature.

This is going to be a HOOOOT!

You don't need a card, you can give them "your" phone number and they punch that in and register the purchases to you.

So, keep giving them phone numbers of various people when you make purchases. People without pets get ads for dog food. Shy guys get ads for "feminine protection". Etc.

Garbage in
Garbage out