Khan Academy requests for donations as their servers are at 250% normal load
(Replying to a trollish comment, but don't want to push it to the top).
There was a comment about the salary that CEO Sal Khan takes, with is over $800,0000 per year.I think Khan Academy is fantastic, and was going to donate until I saw this figure (verified).  I think that it's entirely inappropriate to extract that much from the donations.