I am very sorry to hear about Stuart's MS. I have a couple of friends with it, and there is no doubt that if you are going to get it, the later the better.
There do not seem to be many mechanisms for killing off obsolete websites. Indeed, I do not know what the legal position is on websites whose owners are deceased. Cybervillage has played an important role in Acorn and RISC OS's history and I would be sorry to see it disappear.