There is a point system for being naughty. I collected a few.This makes me wonder. What do you need to do, or not to do, to loose a badge?
Or should I say: to be or not to be?

Get enough points and one gets banned. I would assume the removal of badges works on the same principle.
I should point out that from what I've seen the points system for bad behaviour is fair given the nature of the site.