I think wolf.bet doesn't need to run their signature campaign again as their traffic site is enough / popular than before. But yea i noticed it too they would running it again on the future just like Haunebu said above.
Anyway, lets focus disscuss about wolfbet instead other gambling site on here.
I think their signature campaign last time was a success, maybe they think they can attract new players and make old players stay because of the contests, bonuses, and other promotions that they are currently and will be doing later on. But I believe, doing more promotions here in bitcointalk, will be a good help as a promotion.