I get nearly no junk mail. Every time I get something, I call whoever-it-is and tell them to take me off their list. I also signed up for a do-not-mail list (like the do-not-call registry) and that worked for a lot of stuff. The next time you get a credit card offer in the mail, look at the fine print at the bottom of the page. There should be a number you can call to be put onto that list.

That would be pretty amazing if they track you using your credit card data... but I wouldn't put it past them. I've used my debit card to buy fish food at Petsmart - as much as I hate to admit having shopped there, it's close enough to work for me to walk - and I have never gotten any fish junk mail. But, ya just never know...