Group discussion is something that is extremely important and at the core of what it is to be human. Reed recognised that group forming networks have extraordinary power as the volumes go up. Networks that make group forming ridiculously easy should do well. And yet both online and offline, we have yet to find or create the right tools to enable group forming and group discussion. There are many attempts but they are all broken in some way and often that failure is not obvious from the design. I have yet to see a system that really works well for few-to-few communication.