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.
Make more sense because of the tough competition with other sites, they need to be on the limelight on this forum and can attract a lot other users with their signature campaign an some giveaway for the new users so that they will have a some traffic drive in coming months. Though with what startegy the site needs to operate will finally be decided by the admin of the site only.