No, I’m not joking.
Definitely, the most used and of course, the best feature of Google+ is the Hangouts. People use it for studying, partying, rocking and many more things that they can do with their friends and maybe co-workers.
+Mohamed Mansour is working on his new project that will let people literally Hangout with their friends and other people right onto Facebook! As per Mohamed the project can easily integrate with the Facebook Timeline and hence lets people use it without any problem.
Mohamed is also planning to integrate Twitter & Google+ in later releases.
Only reason why Mohamed is not rolling this out to everyone is hosting. He will be rolling it out slowly as a big community comes together to help and maximize the scope.
Source – My Google+ Stream