Do social networking websites handle death of people who have profiles? How do you know if the person you just followed on twitter is still alive?
Here is the idea of a web app: it will handle your after-death life on social networks.
After you are pronounced dead, your next kin or person you trust can login in the app and launch a program on your behalf... It might delete your profiles, or it might mark them somehow. Or it might post a few farewell status updates like “I am sorry I am gone, but I will leave in your harts - I hope you miss me guys!”.