There is no limit in the amount of Hourly Freerolls that they can join but players are limited to ONE (1) Hourly Freeroll entry per 1 customer, per 1 member account, per 1 family, per 1 IP address, per 1 e-mail address, per 1 payment account.
Any attempts to create multiple accounts to abuse the Hourly Freerolls will result in player accounts being locked/suspended and player funds confiscated.