I don't know why anybody would even want to MM trades anymore with all of the fake "I have been scammed" bullsht people are pulling recently. Fake name scammers, and other stupid crap.
I had a few guys fake my name over the past few weeks, and even a random person walk up to me while I was afk and start saying some crap about me scamming them. I was afk by the GM, I come back and see this low level standing next to me saying "DaleGribble scammed me", then he starts saying it in faction chat and logs off.
Now obviously gm's would look at his account to verify a trade took place, when they see it didn't, they would disregard it. But still.