I just created an account at Proquo and spent 15 minutes stopping the insane amount of junk mail I get. Most of the "do not mail" lists you get on with a simple click and some require filling out a form off the site. The most obnoxious was the DMA, which charges a dollar "to cut down on fraud"--yeah, sure. Like I trust them. The credit card link, unfortunately, didn't work--I'd love to get Capital One out of my life. I'll see if in a few months the volume has significantly reduced and let you know.