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Was his question not just as legitimate as OP's? Does he not deserve the same respect you expect of him? Is this how everyone that questions open-source gets treated?
I don't know about that, I join a social network because all the people I know are on it. It's why I joined bebo long ago (was extremely popular in New Zealand), it's why I migrated to facebook. I can't see too many of the people I know being interested in moving to diaspora.