skigglez
There's definitely some sketchy low trades that just make no sense to me.
And then there's @Jets with his 25:1 mp. He's paying for that in other ways. NC-17 type stuff, you have to go to some dark areas of the internet to find what he's willing to do.
It's really why I wish I could send MP directly to people for wood/food/iron. Sometimes folks just don't have the gold but they've got other stuff.