I have informed people before to inform certain communities (I has a list with usernames/passwords hidden away) if I were to have a fatal accident at work or something. I thought of it after reading a story about some lass who was some high-up in a close community, who died and no one knew about it until just before her funeral.
If dex were to suddenly stop logging on, I would initially think it would be him finally getting the message that we don't like him and leaving, and we'd be partying.