interuserface.net
How Diaspora can succeed: Model real life
The practical problem with every major social networking site is that its network model compresses our complex social circles into simple, one-dimensional tables. Your friends are melted and frapped into a homogenous quantity, and every post you make is broadcast to all of them, regardless of the context in which you relate to them in person. This is a problem for a variety of reasons: Content shared between members of one social group is generally irrelevant to those outside it, creating noise, and when a group’s exchanges require any degree of confidence or discretion, unintended overlap causes obvious problems.