With kids it's the same -- you want to change pickup or remind them of a dentist appointment, you have that ability now, and why not use it? This is just the way the world is now. When kids make plans with each other they don't have to make a ton of arrangements, they can just fly by the seat of their pants; they can meet up with friends, or ditch them because they're feeling tired without it being a big deal or requiring a game-of-telephone approach to communication.