in reply to Possible changes to Voting/XP
One small suggestion -- perhaps add a clause to the bit on most nodes, you will see radio buttons labeled "++" and "--". mentioning something like "(and a radio button for the null vote if you turn it on in your user preferences)". Maybe it's just faulty memory, but I feel like I've seen a few nodes recently that were talking about the lack of a null vote.
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Perl Monks Discussion