I have witnessed several times now on several websites that use this addon that people tend to abuse negative ratings when users fight with each other or have a heated argument. I don't think the purpose of this addon is to provide users with a convenient "hate tool". Also it looks very stange to me that respected staff members show off their negative ratings under their avatar via a red bar. It kind of has a 'decrease respect' effect if you know what I mean.
Then I had an idea. Why not make all ratings into something positive? In the wrestling business, no matter if you are booed or cheered, as long as you get a reaction from the crowd, you win. You lose if you don't get a reaction at all (On a somehow related note, imo the best way to shut trolls up (when no moderators are online) is to ignore them. Hating them with negative ratings just fuels them).
Ratings don't necessarily have to have a signal colour. Screw green for good, grey for neutral and red for bad. If your post is so significant that others feel they need to rate your post, no matter if good or bad, you win.
I believe this would prevent users from using this addon as a tool to smack somebody in the face. Afterall, who would reward the enemy in a fight?
This is by no means a request or a suggestion as you already can do that with some tweaks. Just food for thought. I'm interested to hear others opinions about this.