I can only echo what everyone else is saying , that this is a superb resource.
It has been an invauable resource to me over the years and many times I have wished there were others that could match it when reseaching other branches of the family.
I would be very happy to make a donation or indeed subscribe but I can understand that you want to keep in the spirit of what David wanted. At times we can all take things for granted and we must all play our part in keeping it going.