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.
I don't know there seems to be a massive debate on this subject. A lot of people have it in for people who are "whoring" out their signature space and seem to think they should be banned for exploiting it or the signature itself should be banned.
I don't think there's anything wrong with signature advertising as long as it's not obstructive. Your signatre along with all the other paid signatures are very obstructive and annoying. Thankfully grue has come up with a script which hides those so there has been a temp soultion. I think there should be some restrictions put in place to make the signatures less annoying.