I absolutely love both the concept and execution of this. I hope it offers some of the intimacy that Facebook eschews. My only gripe? 50 is too many "friends."

I absolutely love both the concept and execution of this. I hope it offers some of the intimacy that Facebook eschews. My only gripe? 50 is too many "friends." I doubt many of us interact meaningfully with 50 people in a given week, let alone in a given day. I also wonder how much more users would be willing to share if 50 became 10.