Honestly I don't see the point of having a negative reputation system. Is it useful? No, it isn't. If you check the numbers of post and thanks, you can have a rough idea what kind of person someone is. The green/red indication isn't necessary. Above all it's not enjoyable to see someone in red. We are here for fun. Assess our fellow's value in the real life but not here. If you find an offensive post like flaming you feel unacceptable, report it to the mods and that's enough. Those trolls who repeatedly post offensive and obnoxious crap will only make an ass out of themselves. Assessment isn't necessary. Ignore them or leave them in the hands of the Admin/mods. And when you find someone's opinion too extreme, refute it with reason. Pushing the rep button will not add any honor to you.
my two cents here
my two cents here