If u cn rd this, you may be crossing the street against the traffic staring at your iPhone screen. And should you get knocked down, bystanders may have to weigh their options: Call 911 before taking a photo of you sprawled in the street and e-mailing it to their friends, or after? On the other hand, you, dear reader, may be a semi-Luddite—grateful to have a cell phone when lost in Newark but unmoved by Facebook’s enigmatic displays of virtual friends, and worried what habitual tweeting may do to Generation Y’s prose... More >>>