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A generation ago, Lin/Linton Freeman did exactly this analysis.
I don't know if it ever got published, and it certainly needs updating.
I'm copying to Lin and his wife Sue in the hope they can help you.

   Barry Wellman

    A vision is just a vision if it's only in your head
    Step by step, link by link, putting it together
   NetLab Network                 FRSC                      INSNA Founder           twitter: @barrywellman
   NETWORKED: The New Social Operating System  Lee Rainie & Barry Wellman

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