Optoutprescreen.com
I understand what I read...
I opted out a year ago because I would always get unsolicited offers from banks that I did not have a relationship with. All of those offers would be interest rate offers with a low credit line (I don't carry a balance), so they were of no use to me.
I still get great offers from Chase and other banks that I use, but the crappy, unsolicited offers have stopped.