On the other side,most of the Gambling sites or any new bitcoin related Start-ups approach the forum for advertisement of their products.Vaguely,Signature Campaigns are the easiest ways to do it (apart from promo giveaways).Do you think such Start-ups would still approach if they're unlikely to get as much exposure after stopping the signature campaigns?
True, I'm generally unaware of a site which doesn't have signature campaigns running on the forum(Not a sarcastic comment).