At least with Facebook, social networks and groups are relatively closed. I'm no Facebook expert, but I believe that Facebook also has the three ingredients ne

At least with Facebook, social networks and groups are relatively closed. I'm no Facebook expert, but I believe that Facebook also has the three ingredients necessary to do this: 1) the ability to make public posts, 2) the concept of sharing posts, and 3) attribution of who the post came from when you share it. It's not like this Google+ visualization is about private posts. The following page clearly says it is limited to those that are public. http://www.google.com/support/plus/bin/answer.py?hl=en&answer=1713320&p=about_ripples http://www.google.com/support/plus/bin/answer.py?hl=en&a...