Right, Circles only solves the sharing problem. Diaspora has a much larger ambition. Federation allows for communication between instances that are owned and op

Right, Circles only solves the sharing problem. Diaspora has a much larger ambition. Federation allows for communication between instances that are owned and operated by different people, but it also preserves your privacy better. Google wants all your data. However, you can install Diaspora on a home computer so absolutely no one gets your data except what you share.