I think this is the strangest appeal of social media - the devaluation of your message. I'm not inundating anyone if I take a lousy picture of fireworks; write an unremarkable status; or check in from my preferred, uninteresting eating establishment. It may show on a feed, or someone who visits my profile may see it, but it's a passive broadcast. An e-mail is intended to be read, a "post" is designed to be ignored.
I cannot imagine everyone thinks that why. Why even take the time to do it ? Are billions of people really that bored ? Then surely its time for humanity to end ;-)
Disclaimer: I am not on FB or Twitter (or whatever) - too busy otherwise, probably
