I think the best is ban the signature campaign if it generates too much spam, and only allow them to return if they prove they would not allow spammers
I'm pretty sure that, just like the forum doesn't ban obvious scammers, they wouldn't ban signature campaigns. They can operate their business here as they would like to and we can't really enforce how they do it.
not to mention that sig campaigns more or less drive the forum forward in terms of posts; if they were to be disallowed i think we could all agree that the number of posts would shrink substantially.
We might not ban scammers but we ban spammers and lazy signature campaign managers should be treated the same in my opinion as they're the ones essentially causing it. Some punishment needs to be handed to them otherwise nothing is going to change.
id say theyre more or less enablng the spammers, but the distinction aside, theyre part of the problem regardless.