This article may interest some of you. I personally think that kids should be given strict boundaries when using electronic devices, including cell phones. I recently heard a horror story from a friend of a friend who went travelling and whose kids didn’t want to do anything but hang out in free wi-fi areas so that they could chat with their friends on Facebook, Instagram, Tumblr, etc.
Better be preventive than having to deal with this kind of stuff!
P.S. Did you know that kids need to be over 13 years old to open a Facebook account? I haven’t checked their latest policies but that’s how it used to be a few years back.