I really ought not to spend quite so much time on a Minecraft server I don't own - it seems to be down today (and I've not yet mentioned it to the owner because I really ought to get work done instead...!) and it's a good reminder it could go away at any time and, while it disappearing of course won't make a real difference to anything, it would feel rather a gut-punch to have all those hours of digging and building vanish in an instant.