Leongsam doesn't do this for charity. For all you know, he is getting paid by the PAP for providing a virtual Speaker's Corner for sinkees to vent. For the PAP, a few million buckaroos thrown at Leongsam is small change, a penny-cost of doing business. As for Leongsam, he gets to retire comfortably in some foreign land.
This forum is a cashcow for him, the best retirement plan he ever had imagined.