I've got mixed feelings about renting my sig for gambling. I've done it because I wanted managers to consider me for other sig campaigns which aren't casinos when they're available. I'd prefer giving it to mixer sig campaigns but they're banned. I'm not sure how long I'll rent my sig like this.
I don't think you can hold yourself responsible for the decisions of others and children aren't supposed to be gambling. As far as shilling for a casino to earn money... Why not? I've worn signature advertisements off and on for years and the times that I didn't wear them, I think about all the posts I made and time I spent here... Most of it is spent arguing with trolls, helping others, or trying to educate those who lack serious knowledge on investing and open source projects. I think I should be paid for this. Especially when you get well known enough to be harassed by mentally ill users.