Adding a positive star meant negatively. That is, someone gives you a star but they don't mean it. It cancels itself out and that makes it negative, because it's defeated its purpose of existing.
That help you?
"TV makes sense. It has logic, structure, rules, and likeable leading men. In life, we have this. We have you." -Abed Nadir
That really, really shouldn't happen; you should always have at least one star. So however you got one star... I haven't the slightest clue. But, do consider yourself special! Other people may have 1, 2, 3, 4, etc stars, but you are the only person with -1.