What is the differrences between Talk and Google+ Messenger?
Google Talk syncs to your Gmail account. This offers free instant messaging to all your Google contacts that you have invited to “talk” with. You can use the services within the Gmail web page, or download Google Talk and install it on your computer or smart phone.

Google+ Messenger, originally called “Huddle”, is a sub service to Google+.

The big difference between the two is that Google+ Messenger is the instant messaging service that is synced to your Google+ account, not your Gmail account. People who are added to your “circles” are the ones that are able to be messaged with. Another difference is that Google+ Messenger allows people to have group chats.

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