I lead the City of Chicago group. We have anywhere from 6-14 people at each meeting (still fairly new, only since summer 2013). We are like the Portland group described, just facilitate some starter questions but it's mostly conversation flow. I'm the only SLP. Most of the people in our group are PWS, but we have a few significant others of PWS who are regular attendees as well. Our group likes to do social stuff. We are pretty much all young professionals (20s to 40s). So far it's just been dinner-drink events, but my goal for this year is to do some more activity-type things. Problem is finding fun, cheap indoor things to do with a large group in Chicago in the winter... Seems like maybe we should have a Reddit meetup at the conference in July!