I agree there is a market for spcialized networking. Look at the dating sites and "CIO" sites
However from scouts to NASCAR to fusion at home there are lots of interest areas where people want to exchange ideas and thoughts. This whole "I have left my mark" has driven not only blogs but the site where you could purchase a pixel for a dollar. Now YouTube where people make their own movies.
As social creatures we love to be seen when there is no risk and lots of reward!
Just my thoughts since I like to be heard. Now it is your turn.
Allen
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