Can you clarify that you get 0.005 and have to wager 1.5 BTC before even being able to withdraw ? rofl, are you sure this is a promotion ?
Yes, it's a promotion and we are giving it out for free. You don't have to take it if you don't want to.
You are not giving it for free, you stole these from the fake fees you are charging for withdrawals. You set the fee to 0.0001 per kb, but then charge the players for 0.0005 and whenever there is a difference (98% of the time) you save it up for yourself. Then you start these dummy "promotions" and don't even mention the conditions for withdrawing it.