I don't believe that it is for the simple reason that many of us have learned: your social network can only expand so far before it gets "rough" at the edges. T

I don't believe that it is for the simple reason that many of us have learned: your social network can only expand so far before it gets "rough" at the edges. The quality of information degrades rapidly the further it gets out, so I am not sure that having more from anyone will help in all cases.