Asymmetric Sharing: Circles in Google+


A nice deck from Ross Mayfield explaining how sharing with Circles works in Google+

Google Plus has a different privacy/sharing model than other social networks. Different from Facebook’s confirmed tie model that they have been gradually breaking with ever more granular complexity. Different from Twitter’s model of Asymmetric Follow, where people can follow/subscribe to posts that are public. Google+ is Asymmetric Sharing, where you selectively choose to share, but to make it into the main stream of view, someone needs to choose to share back.