Might be a problem with spam mail. But at least you can get where its coming from.
Ex. If some of us get spam we can cross reference to find where its coming from. Nail some of those people that sell lists without telling you!
Just an off the wall thought!. Kinda sounds like what BBB does now, just in a different way.
I expect much comment on the BBB thing. Don't get me wrong I use the BBB often and its good, but they (BBB) have no enforcement power. That's why i'm saying it would be much like the BBB. But hey nothing wrong with a little compatition