I take a ton of pictures with my smartphone. Hundreds per month. You probably do, too. So you know just how fast snapping all those photos adds up. That doesn't bother me one bit. The thing that bugs me is that surprising moment when I'm in the middle of taking some awesome pictures of the kids or the scenery, and suddenly this little box appears on screen: That little Memory Card Full box popping up is like hitting a brick wall. There's ...