Hello there DrFaller, I have to agree with Bestfriends although for a different reason that you allude to in this comment. There are more people in game than forums, however that reduces the chances of a fly by night in game service. Yes, you said something about banning the person, but I would rather give my pokemon to a human instead of some random In Game Fiverr person that could game the system.
Also Bestfriends did mention the human aspect of the Trade Corner which brings us together as a playerbase. It should be expensive or time consuming to isolate yourself on Pokemmo.