It is interesting campaign from Rollbit team if they do it but I think they can promote their sportbook by creating some different signature sets and allow their signature campaign participants to pick what signature design to use. Who like sports will choose sportbook signature to wear for their account.
Interesting. This is news to me considering the fact that their sportsbook has already become quite popular in the crypto gambling world primarily thanks to some great odds in various markets.
I absolutely love their sportsbook UI which other crypto gambling sites could learn from. Anyway, I am not expecting them to advertise their sportsbook anytime soon.