I think it would be better to say "this room has moved". There is mention of something like this in the section on destroying rooms[1], but it's not mentioned how you should inform someone joining after the room has been destroyed about the new location.
Current implementations (AFAIK) forget about the old room being destroyed and let anyone create, and become owner of, a room named the same as the old room. I can imagine this not being optimal sometimes, possibly even a security issue. How about some clarification, like saying you should send the same /presence@type=unavailable/x/destroyed stanza as when the room is destroyed. And maybe we should discourage implementations from letting anyone recreate the room for a while? [1]: http://xmpp.org/extensions/xep-0045.html#destroyroom -- Kim Alvefur <z...@zash.se>