The 2% reminds me a little of the ELO system of chess. The stronger you are the higher is your risk (i.e. when playing against a much weaker opponent) which is

The 2% reminds me a little of the ELO system of chess. The stronger you are the higher is your risk (i.e. when playing against a much weaker opponent) which is good. Only because you are sitting on 10K of Karma won't hinder to post crap and opinionated stuff on HN right now. It could keep threads more in balance and bringing refreshing views on old subjects