In this example, I have plotted users of our own intranet on Haaartland. Thicker lines mean more communication and the distance between people represents closeness. Multiple lines can exist between two people representing various means of communication. Eg. group, one-on-one, etc.
I think we can learn from social graphs like this, how are we communicating? Perhaps I should give @partik a call to see how his parental leave is going? 😃