It’s also a nice addition to a standard webinar; the participants can talk about things and ask questions without interrupting the presenter or disturbing other people who don’t care to chat. This works best when a second person monitors Twitter during the presentation so the presenter can weave in answers to questions and otherwise join the discussion.

HOWEVER! It can become a victim of its own success. With enough people in the room, you get people talking “over” each other which becomes impossible to grok. Experienced chatters might be able to follow and continue the pattern; the rest of us are just lost.