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.
Only those signatures that advertise gambling sites encourage posts in the gambling section.
Your signature is that of a gambling site (777coin) so it makes sense to encourage members who are displaying it to post more often in the gambling section. Someone who is browsing and posting in the gambling section is more likely to click on your signature and play at 777coin vs. someone who is browsing and posting in the development & technical discussion section or the politics & society section, for example.
My signature is that of an altcoin exchange, so there is no such encouragement. Only those posts in the off-topic section are not counted. The Bitmixer campaign discourages its members from posting in the alternate cryptocurrencies section by not counting these posts since they don't deal with altcoins (whereas mine does).
Which signature campaigns pay for only those posts made in the gambling section? I'm not aware of any that do this although I've seen a few that either have a higher rate for posts made there (such as yours) or enforce a minimum number of posts to be made in that section per payment cycle (e.g. CoinRoyale). In any case, I'm sure it's far from common.