With a 6-month-old son now running our household, our shopping patterns have changed dramatically. What used to be about meandering shopping trips has now transformed into focused shopping, looking for the best deals and convenience. If I have to choose between a half hour drive to the closest Babies R Us, fighting traffic and crowds along the way, or going to Diapers.com, ordering everything we need and finding it on our doorstep the next day, well,