• Hangouts- Hangouts is a way to conduct group video conferencing with other Google+ users.
• Circles- Facebook and Twitter both allow users to put people in specific groupings or lists. But how many people use or even know about Facebook friends lists? Circles, on the other hand, put segmentation up front in their product – and they make it fun!
I could see organizations segmenting their donors, volunteers, partners into a various different circles.
See on www.johnhaydon.com