I'm sure the donator ranking was created when Bitcoin was worth a lot less than it is now. 10 Bitcoins is a lot. I wish I had enough to donate.
I think that must have been when 10 bitcoin was no big deal, because at the rate it is now, I don't see any member willingly parting with that much. I think a review is highly necessary to reflect the present state of things. Would be good to know if any member have actually made this donation till this moment.