This is a great point. When logging onto the internet meant no one could make phone calls you spent 30-45 mins on AIM, caught up with your online friends, sometimes worked hard to sound funny and clever, had a great time, and then found something else to do.
But now that kids are connected to each other 100% of the time (being in class in school is also not excuse enough to not be connected) you have to be funny and clever all the time. An off hand comment while distracted by a million other things can lead to havoc in your social and online life.