I read about a guy who had a similar experience in (I think) RadioShack many years ago. The cashier asked for his address, and they guy questioned why it was ne

I read about a guy who had a similar experience in (I think) RadioShack many years ago. The cashier asked for his address, and they guy questioned why it was needed, and would they be sending him junk mail? The cashier made an excuse for what it was needed for and said that "no, they wouldn't be using the address to send junk mail to". The customer wrote on the back of the cheque (I said it was a long time ago) a minimal contract that said something like "By accepting this cheque RadioShack agrees that they won't send any junk mail to the provided address, if any is sent a fee of $100 will be payable" (paraphrasing). RadioShack ultimately sent the guy junk mail, and the guy asked for his $100 which I think they ultimately gave him.