[Air-L] comparing facebook groups

[Barry Wellman]

Stephen,

I suggest you post your query to Socnet, the helpful social networks list 
serve, as you are quite likely to find tool suggestions there.

   Barry Wellman

    A vision is just a vision if it's only in your head
    Step by step, link by link, putting it together
                  Streisand/Sondheim

"The Trump White House will be a battlefield between crass plutocrats
  and dangerous lunatics, and we all must hope the plutocrats win."
      David Frum, Dec 3, 2016

"Those are my principles, and if you don't like them...
  well, I have others." Groucho Marx

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   NetLab Network                 FRSC                      INSNA Founder
   http://www.chass.utoronto.ca/~wellman           twitter: @barrywellman
   NETWORKED: The New Social Operating System  Lee Rainie & Barry Wellman
                        http://amzn.to/zXZg39
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