i dont know if i am correct but till now i have seen that most of signature camp pays only for the posts in Gambling sections, or they encourage that, why so?
i think its not good.
Admins should consider this situations.

and why u use gambling signature campaign ?
i don't know how to differentiate between them but someone quoted me in one of my thread about the thread created by Mitchell and i opened most of the signatures and found that they are saying to post in gambling section , they will not pay for other places.
this can be serious spamming cause and ADMINISTRATORS should think of this.