I'm sorry if I misunderstood this article.. but they took their $70k of profit and donated it to wikimedia, then took all profit from the 'gift' idea and bought an island.
So these dudes essentially give away the vast majority of their profit yeah? What am I missing? Don't get me wrong, it's incredible.. but at the end of the day, very few forms of altruism exists and I feel like I'm overlooking some part of the equation. Where's the sinister ending? :)