Smart Social Networks - Defined and Compared

As I've seen more and more social networks launch, there definitely seemed to be an evolution happening. The concept of the "Smart" Social Network dawned on me after I learned about Vox and previously wrote about Smart Social Networks:

But what if there was a way to put access controls around your personal details, so that only people you trust can see it? There's a new type of SNS arising that enables exactly that. "Smart" Social Networks - A Better Way to Connect Smart social networks are bringing intelligence into the network. Similar to the real world, they are helping users describe their online relationships. Let's take a look at some of today's evolving "smart" social networks: Facebook, imbee, Vox, and Mulitply.