But what if someone is promoting a gambling site on social media etc, will the money earned from it be legal provided he will never directly gamble ?
This issue is very sensitive especially to those countries who have a very deep religious practice, of course, you have your needs and you want to make an income and promoting gambling sites is a good source of revenue, but you also have an obligation to your religion, but like what I post in my opinion, I'm ok with it as long as I do not deceive people that gambling is a get rich scheme I'm ok with my stand.
I always encourage when I'm promoting be it a gambling site or investment site, just to spend and spare what they can afford to lose and just have some fun.