Sometimes I do some gamble, and I always prefer to spend the money on the website that are paying me, I think it's fair and a way to say thanks
I am not a big time gambler but i do play once in a while and it all depends upon my mood and since no one is forcing you what to do with the earned coins i might not necessarily gamble all the time thinking about that i owe something, but as i said it all depends upon my mood and most of the time i do sports based gambling if there are interesting matches.