You should then receive a wide variety of additional promotions, including odds boosts, parlay boosts, bonus bets, parlay insurance and free-to-enter sportsbook contests. You will be welcomed with a large sign-up bonus if you join a sportsbook such as Caesars, BetMGM, DraftKings or FanDuel. You should claim as many sportsbook promo codes as possible, because they reduce the house edge that sportsbooks build into their lines and leave you with a better chance of earning a profit. They have large marketing budgets, so most of them offer large bonuses to differentiate themselves from their rivals. Lots of college football betting sites are currently vying for your attention in an increasingly competitive market.