To Be a **** or Not to Be a ****

So a restaurant in the town where I go to school used to have a really nice website where you could view their menu and do online orders… apparently they are stupid or something because it now goes to a parked domain and the DNS says it expired today. Obviously someone forgot to renew the domain.

Should I tell them or should I try to get in on the drop and register it when it becomes available?

And if I register it what should I put up there?