The question of who the moderator should be is not difficult. It would be a person elected by the class, responsible to the class, operating on guidelines decided by the class. If the class did not like the way this person ran his office, he would be replaced.

With the noise (to say it politely) to relevant information ratio we see here, we loose many, many, more members than we gain. The attrition rate is very high and not good for the class at all. It only takes one person crapping all over the place to make a stink, it is as easy as that and nothing noble about it to be blunt.