I don't have a huge problem with junk mail. Several years ago I sent my name and address to the Direct Marketers Association and that reduced the credit card offers and other random advertisements I was getting. But now that I've moved a few times and changed my name I'm starting to get a few little things here and there. I haven't been able to remember where I put the address for the Direct Marketers Association, but today I found this article on Store and Style. They put all of the junk mail management info in one place! Hooray! I think they write their articles just for me.
If you want to reduce the hassle of dealing with junk mail, eliminate some of the paper waste going on in the world, or reduce how much your name and information is flying around out there this is the place to go.