I love watching "Mad Men" with my 16-year-old daughter. To me it's a window into my parents' and grandparents' world, a fascinating comparison to today. To her it's like watching life in a parallel universe. She's outraged at depictions of parents smoking in front of their children and, when one character was in a car accident, she was dumbfounded as to why the driver's kids were in the front seat without seatbelts. 

To ask my teenager what modern practices might look reckless to her grandchildren would ruin this precious hour we have once a week. Yet, I ask myself that question frequently as I see technology transform our children's lives. 

The average child spends more time today with media than they do in school or with their family. More than 5 million kids under the age of 13 have joined Facebook; by the time my daughter is 18 she will have sent at least a half million texts.