Luxbet has the power of its large parent company, Tabcorp, behind it. This fully licensed bookmaker offers horse, greyhound and harness racing plus a range of Australian and international sports betting opportunities. You can use the free bonus bet on either racing or sports. With over 3,000 markets available for wagering, you may have a difficult time deciding where to spend your cash.  Note: you do not have to wager to get your free bet you just have to make your initial deposit.