Описание тега hangout

Google Hangouts is an instant messaging and video chat platform developed by Google. It incorporates features from four messaging products: GTalk, Google+ Messenger, Hangouts, and Voice.

Google Hangouts is an instant messaging and video chat platform developed by Google. It incorporates features from four messaging products: GTalk, Google+ Messenger, Hangouts, and Voice. In current versions of Android, Hangouts is the default application for text messaging. note that Android devices would require the addition of Hangouts Dialer to may outbound voice calls as with Google Voice.

Resources:
- http://www.google.com/+/learnmore/hangouts
- https://developers.google.com/+/hangouts