This might be too late to the discussion, but have you considered combining the vote systems into a grid below each comment, with the Y-axis as karma and the X-axis as agree/​disgree? This would halve the number of clicks needed to vote.
This might be too late to the discussion, but have you considered combining the vote systems into a grid below each comment, with the Y-axis as karma and the X-axis as agree/​disgree? This would halve the number of clicks needed to vote.