I Have A Question....

How do you get negative wiki points? I have been curious about this ever since I was on the list of top users for wiki points; I was curious about the end of the list (I had 0 points when I did this), and I saw that some users on the site have negative wiki points. Is this a glitch in the system? If not, how do you DO that?

Just commenting to get this further up in the forums; yes, I'm an asshole, but I REALLY want to know.

Please don't bump topics when asking the community a question. 
 
As for why some users have negative points when a user submits trivia for a game and it is discovered that their submitted question is poorly worded or incorrect the punishment is receiving a point deduction of wiki points.