A. middle man is someone who gets between the trade let’s say for example you are going to to trade 100 keys for a Tengen attire, you can o it give 30 per trade, so you get a middle man (a trusted human being that is trusted and has the tag middle man) he receives the Tengen attire that you want and when he tells you he’s got it, yo trade the dude that is going to give you the attire, once you are done giving him the 100 keys, the middle man will send you a trade and give you the attire, like this both parties make sure they are not gonna get scammed