(September 8, 2012 at 3:19 pm)Polaris Wrote: I have found that negative reputation is often most used by the trolls and you might get someone with several alt accounts try to game the system in their favor. I've been on a website where it was abused so much, that the voting system fell out of favor...people just stopped caring about it's implications.
There's that, yeah.
While some would use the system as it's intended, I think we'd quickly see a great many of those with unpopular opinions (e.g. theists, conservative politics, etc) negative repped into oblivion along with the trolls. The rep system already strongly resembles a popularity index, and with negative rep it would be even more so. Beyond a certain point it becomes meaningless.