Your part of the reason why this forum is turning to shit.
You mean spamming? I wouldn't call my posts spamming as they are on topic and why spamming should be a problem if admin allows It? If It would be a problem admin could ban signature campaigns or make them not paid per post and account selling/buying and there would be no point to try making more posts for bigger profit?
Some new bitcoin users comes here and buys an account to lift restrictions or especially for signature campaigns, so what's bad about It? There could be at least a warning message that I can't post on that much accounts anymore so I could stop and sell them for other users.
Spam is not allowed by admin. No idea where you get that idea. Sign campaigns being tolerated does not means they allow spam, there are lots of cry and pain because of people being banned due to signature spam.
Again: would be better you post some of your accounts here so we can judge. They are already banned, nothing to lose anyway.