Rheingold’s suggestions are agreeable in my opinion. I think today it is most important to have mediators because it is important to make sure the focus is not lost. To me, a host is the equivalent of a leader of exemplary character. You need to be a model of what you are aiming for to keep the group moving in the focused direction. My favorite quote from this article is, “You need to be cautious about learning by trial-and-error because errors at the beginning can set long-ranging reactions in motion. Establish trust early or expect suspicion for a long time.” I think the moderators are lagging at this point in time.