What is the number of “informal groups” in the US? One proxy might be the number of Usenet groups.?

Question by brentc123: What is the number of “informal groups” in the US? One proxy might be the number of Usenet groups.?
I am trying to get at the number of “informal groups” (affinity-based ad hoc groups) in the US. One proxy for this data might be to find out the number of Usenet groups… but that’s an international number. Also love to get a guess at the average number of members in each group. Think book clubs, bowling leagues, hiking and fishing clubs, etc.

Best answer:

Answer by gabs4_28
try google it. i did but cant find it

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