though really, staying silent on your blog for countless years does not usually have people suspecting you may be dead.
What would make people suspect you may be dead?
see, in this exercise, one has to exclude immediate family members who are used to seeing your face/body on a fairly regular basis.
others, well
if someone posts a photo of you (preferably sepia/BW), with a teardropface smiley caption.
if someone sees a bus run over you in a highly unapologetic and smashing manner.
if someone watches you keel over at work and lie on the grimy office floor in a disgraceful fashion.
if you were standing near a window, with no door in sight, one second, and the next second you were nowhere to be seen. Might help to have an off-white linen curtain flapping rather dramatically out the window.
I'll think of some more.