The new 'Start a Google+ Hangout' button integrates Google+ with the video sharing website YouTube, making it possible to watch videos along with your nine friends simultaneously. The new button allows you to search for new videos while your friends watch the previous video. Moreover, you can put the video in mute mode or even start video chat with your friends.
How to Start Google+ Hangout on YouTube?
If you want to share a video with your friends, hit the 'Share' button down to the YouTube video > you can see various sharing options including Facebook, Twitter etc > You can see a new message "Watch with your Friends" with link on "Start a Google+ Hangout" > Click on "Start a Google+ Hangout" > You can login to Google+ > Pick your friends > Watch video!!
Importantly, any of your friends can change the playing video at any time. That means, if any of your friend find the video uninteresting, he can change it and rest of the team including you have to watch his selection!
The new service was rolled out, just few days after the Google added game service to Google Plus. With this, G+ users can play social games like Angry Birds, Zynga Poker, Crime City, Diamond Dash etc. Adding more and more features, Google is making Google Plus a tough competitor to market dominator Facebook. It is expected that Google may soon announce the launch date of Google+. Stay tuned for more updates.