How Exactly Are This Young Guys Making It(yahoo Boys)

It baffles me how this young guys make it in this Yahoo of a thing... Most of them are dumbass and Don't even know how to chat with correct English have seen countless of their chat with their client and I was shocked even a 10 year old can't type with so bad grammarThere is this guy I know he was my junoir in secondary school. This guy was the dumbest in their class plus he was so dirty that many people don't even move with him.. untill I some him recently driving one mad Benz with some guys and girls inside,, wasn't even jealous about him cuz I know his source of wealth is not pure..The question is how do this guy's make money exactly? How I'm confused honestly