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The FAQ has boilerplate advice about questions and the area 51 questions are starting to get closed. I'm not really sure what to ask anymore.
I think this is the first site of this type, the most similar as of yet appears to be the RPG and board game site, but at least those sites cover game rules which can be a difficult subject with the depth and complexity of law.
I don't actually run into show stopping problems whilst reading a science fiction novel. It's not like, "Hey I'm on page 56 an I don't know how to get to page 57." (Unless it is a choose your own adventure). Hey, maybe that's what I'll ask next.