Mostly search+discover... You can generally search on a topic of interest, and find a group that covers it (or several), the up/down side is some groups only al

Mostly search+discover... You can generally search on a topic of interest, and find a group that covers it (or several), the up/down side is some groups only allow visibility to members, so you can't get a feel for that group without joining first. While I appreciate the usefulness, I'm less inclined to want to stay within Facebook's walls, so to speak.