You should be very happy that you are not banned. I've seen many people banned recently and I'm seriously scared right now. I don't know how many posts I can write without being assaulted by banning team.
That's the main reason I don't have a paid signature. It increases your probability of being banned significantly!
Only if you spam.
Vod, if you had a paid signature (with your current kind of posts) you wouldn't be banned.