From the title I originally assumed you earned 1 BTC gambling, but either thats quite some earnings. How much exactly does an affiliate have to gamble to earn you 1 BTC anyway?
100+ btc or even more like 200 - 300 btc betted because he receive 1 btc from affiliate assuming alot of people used his affiliate or someone deposited big and betted big , profited big
if he can afford to that its really interesting to follow that lead, if you got a lots of friends who play gamble then better to find some new gambling site
who offer good affiliate then show them the opportunity and advantage for sure they will be attracted to join you.