How much screen time should young children have?

We all know that too much screen time is not a good substitute for play and interaction with our children.  The majority of us though have been guilty from time to time of using screens – tv, ipad, computer – as a babysitter.  So what is the right thing to do?  How much screen time should our youngest children, under 2, be exposed to?  You may be surprised by the recommendations of the the American Academy of Pediatrics makes.  One of my favorite resources for media advice is Common Sense Media.  Here is a great article on How Much Screen Time Should Young Children Have?