Google recently began letting worldwide members of its social network broadcast live Hangouts sessions for anyone to watch -- just like some performing artists and politicians have already been able to do. The new "Hangouts on Air" feature was introduced in September 2011 at Google+, with certain high-profile individuals testing out the service that lets as many as 10 people simultaneously take part in roundtable-style video chats, with the option to live stream and record the session. The public roll-out of "On Air" has opened everyday real-time Hangouts to any number of viewers, automatic...