Google today launched 'Hangouts On Air' to Google+ users worldwide, letting members broadcast "hangouts" live to the online community. Google introduced Hangouts On Air to a limited number of broadcasters last year, enabling them to go live with friends and fans, for all the world to see.

So if you have something to say, you can now go live in front of a global audience. By checking "Enable Hangouts On Air," you can broadcast your live hangout - from the Google+ stream, your YouTube channel or your website - to the entire world. You can also see how many viewers you've got. Once you're off the air, Google will upload a public recording to your YouTube channel, and to your original Google+ post. This way it's easy to share and discuss your broadcast after it's over.

The "On Air" option for Google+ hangouts is being rolled out gradually because "launching millions of live stations takes some doing," Google said.