Digital Parent put on a great webinar: Media and Early Childhood Development: What Parents Need to Know.  You can actually listen to it from that link- if you have an hour to spare I highly recommend you do. Dr. Holly Pederson allays some guilt that many parents feel about allowing their children access to digital media.  When I asked about eBooks at the end she said that she doesn’t really count them in the same category as TV, computers and video games- when the parent and child are interacting with the content and each other, it’s not the same kind of passive experience as just watching a TV screen.