My concern for going in this direction is that if members of this board start sending out messages to schools/instructors that the question to try to get them to come here as a place of debate, that the board itself will get a reputation of spending time trying to tear people down and I don't think that's really the intent of the owners of the board. Either to do that or to have that reputation.
I think there is a difference between sending a letter to someone and saying on the board "Hey, I think this guys a fruitcake, this is what I sent him, I'll let you know what he says" and to send someone messages inviting someone to this board with phrases like "the people of this forum would be interested in...", or "we'd like to know..." or "can you explain to us...". One is a personal matter and personal perogative, the other tries to get the forum involved in a way I think shouldn't be done without at least the oversite or approval of the owners/mods and maybe the agreement of other board members.
I also think there is a big difference between posting to this board "hey, I ran into this guy in my town selling black belts at a bookstore, watch out for him" and to go looking for someone on the internet and decide "hmm...I think I found a fraud" and to start challenging his claims and his background. Everyone is free to do what they want in their own place, of course. I think the first is within the interest or intent of this message forum, the second is not, as far as I can discern