Did you know that there's a service called Deathswitch, a posthumous messenger service that sends out e-mails you've created while alive after you're dead? It's true. I read about it in an AP article on a woman named Melissa Spagenberg, who is on a quest to contact all of her father's online World of Warcraft cohorts after he died suddenly.
The Deathswitch service lets a user create up to 30 e-mails addressed and ready to go upon exiting this mortal coil. Automated e-mails that require a response with a password within a predetermined time are sent to users to make sure they're still breathing. Should the user not reply, the e-mails are sent -- from beyond the grave. In the event of a premature launch, Deathswitch has a "Wait -- I'm still alive!" button that resets the service. Seems like that could make for an awkward follow-up conversation: