"fring is the 1st company to bring mobile Group Video calling across platforms, for free, so that users can see all their friends at the same time, and on one screen."
Fring Group Video goes live, enables four-way mobile video calls for free -- Engadget
http://m.engadget.com/default/article.do?artUrl=http://www.engadget.com/2011/04/27/fring-group-video-goes-live-enables-four-way-mobile-video-calls/&category=classic&postPage=2&icid=eng_latest_art