If you have used Google+ hangouts (the free group video chat) on Google+ then you might have already known that it only allows a maximum of 10 users including the host.
Often we hear complaints from users that I tried to join an hangout but it was already full. Google+ team listened to our feedback and sometime back announced a new feature called Google+ hangouts on Air which when available will allow more than 10 users and a large number of audience to participate as spectators or viewers.