Its portable. You can choose your drug with a phone - games, texting, facebook. And it pings and pings and won't let you get any respite. Its different in intensity from all those things that came before.

I just think it deserves some analysis - what's the maximum distracting addictive information rush we can support without becoming disfunctional or chronically obsessed? Isn't it worth finding out, before we give children unrestricted access?