In reply to andychapm:
All is explained in Andy Kirkpatrick's latest blog post.
http://andy-kirkpatrick.com/blog/view/the_machine_stops
"...And so, as an experiment, a few weeks ago I switched off my website, my twitter, my facebook. I wanted to pull out the plugs and the leads and the cable from my head, to go into airplane mode, and see what it felt like. And as I suspected I found that any interested thought, idea, event, view, article, video, anything, would create an impulse to ‘share’ or to ‘tweet’ or to blog about, each one unsatisfiable. I don’t think social media makes us happy, it is a monster, and animal, one that creeps under your skin and into your brain, effecting and warping your mind to the point where you are nothing but an app, your experiences sucked up for who knows what, maybe bones for some future cyber archaeologist. And so I switched it all off."
The above is just one paragraph from his longer blog post which explains why he did it, and why he's back.