Why the online obsession with revealing every detail of your life?

"Sharing. Now there's a basic social concept that has somehow got all out of whack. The idea behind sharing is simple. Let's say I'm a caveman. I hunt and slaughter a bison, but I can't eat it all myself, so I share the carcass with others, many of whom really appreciate it, such as my infirm 86-year-old neighbour who hasn't had a proper meal in weeks because he is incapable of killing anything larger than a woodlouse. Have you tried grilling a woodlouse?"
 Charlie Brooker /guardian.co.uk/continue reading