I didn't see Callie's post until Cavey quoted it, for obvious reasons. Salman Khan has made his fame as a philanthropist and someone committed to the public good without wanting anything in return except the satisfaction of doing good for society. He's also obscenely rich and doesn't need "donations" in order to keep Khan Academy afloat. Khan Academy was founded on the principle that education should not be barred to those who can't afford expensive commercial tuition fees. With the introduction of "donations" to Khan Academy, through spam emails signed by Salman Khan himself, Khan Academy is betraying its founding principles and on its way to becoming just another greedy company in a world in which greed is glorified the way Calli8e and Cavey just glorified it. That's what is sad.