Google + got chat between users of common circles

Google + gets interesting option for chatting with people that are in common circles, ie those who have added you to their circles and that you have in circles. For those who do not use circles, they are groups / lists where you can organize and control your friends if you want to post something meant only for certain people.

The difference from the previous chat that was available only between people who know their email address, or are friends, now enabled chatting with everyone that added you in their circle, and which you have added.

Google in his blog post says now it is possible chatting after you leave Google +, chatting continues through other Google products such as iGoogle or Google Talk.

Google says this is not a form of group chat between circles, although it would be quite interesting.