Interesting discussion:

"Hope Hughes, a stay-at-home mom, was at a playground near her Chicago home with her daughter, then four, when she heard a thunk—the sound, she says, of a young boy hitting his head on equipment. She says she comforted the boy as his head swelled and he bent over, throwing up.

She says about eight minutes passed before a woman she had seen using a mobile device nearby noticed what was happening and came over. It was the boy's nanny. "She was texting or surfing or something and wasn't paying any attention," Ms. Hughes says."


http://online.wsj.com/article/SB1000087239639044477240457758...