My sister got one of those free $50 bets, she referred me too but I haven't bothered to take up the offer lol it's just that Sportsbet.com offers that to everyone when you join up with them. Don't know what the gimmick is, how do they stand to give away all those free $50? Unless of course you can't withdraw the money for cash even if you won over $500 with the free $50 voucher?
Hope somebody can tell me