Well now, you can be that guy. Or you can fess up to all your friends about your postsecret, post mortem.
From the site:
This is how this works. You write a few e-mails, and choose the recipients. These emails are encrypted with military-grade algorithms, so you can be sure that no-one except the intended recipient will ever read them. Your switch will email you every so often, asking you to show that you are fine by clicking a link. If something were to... happen... to you, your switch would then send the emails you wrote to the recipients you specified. Sort of an "electronic will", one could say.
Internets, we love you.