this might have been asked before, but isn't there a service that will automatically send out an 'official statement' if you don't sign in to the service? e.g. after 6 months of not signing in, the message is sent out that you are 6 feet under. (i'm sure we've discussed this before.)
in my own case i was wondering what might happen with websites that you might be running/hosting and the complications that could cause for clients that relied on you to do absolutely everything for them. i'd guess that they wouldn't have a clue what to do about getting access to their site/content. maybe such things are covered within normal contracts????