As a teaching tool I would see it as an opportunity to let people vent their ideas, emotions and opinions in a collaborative environment with immediate response. It could also serve as a channel to collect ideas, make provocative statements and brainstorm on them. If we compare it to a real classroom, it is more like a moment of liberation, where everyone has a voice that is heard and reacted to in real time.

The risk is that at the end there is no real listening and it is a little hard to follow the flow and the understanding of each other. On the other hand coming up with many different ideas concurrently it is an excellent stepping stone for further discussion and thought.