In the past year, we see more events that require mass chat rooms to deal with thousands of simultaneous chatters. Those events usually have a live stream video and RumbleTalk chat room next to it.
Lately, F5.com, a leading security company choose to implement a chat room next to a live USstream video in their April 2014 event. In those events thousands of users can participate in a live conversation and share their view about the video broadcast tutorial.