I did toy around with weighted entrance rewards, but it makes the model more complicated. After thinking about reversals a bit more, it would make sense to all

I did toy around with weighted entrance rewards, but it makes the model more complicated. After thinking about reversals a bit more, it would make sense to allow users to "exit" their vote. Bringing the total vote count (positive or negative) closer to zero and allowing more unbiased voting to continue (as people exit their votes, the percentages fall back to 50/50).