If you've watched any sports in the last few years, you have undoubtedly seen the relentless advertising from various sportsbooks offering an array of sign-up deals.With numerous research firms expecting the global sports betting market to grow at a double-digit rate annually through 2030 and beyond, this high spending on ads makes perfect sense.However, it is expensive for these sportsbooks to not only place these ads but also "give away" free money up front to encourage bettors to join their platform inst ...