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See - reporting incessant abuse really DOES work. REPORT those questions that don't make sense, because the person posting those questions is one of those EXTREME cases. He has HUNDREDS of alternate Yahoo accounts. If I've managed to convince Yahoo ALL BY MYSELF that this person is insane, THINK what several top contributors can do together - SHUT THE TROLL UP PERMANENTLY by reporting ALL of his abusive ANSWERS AND QUESTIONS FOR ABUSE
You don't have to answer the question - just REPORT IT.
He also answers his own ridiculous questions HIMSELF, several times, with alternate accounts.