Do not never expect to know and understand everything what happens online around your teenager kids - it is impossible and you will waste your time if you try this. Better create rules & teach them online behaviours as well as you create rules and teach them in the offline world: something by telling, something by your own example, something by discussion. And necessarily leave the space for testing - some things can not be learned without the experience. Today's quote is by Ethan Zuckerman who is a 🇺🇸 media scholar, blogger and Internet activist. So relax: your job is to make an arrow & shoot it to the right direction. Everything else you can not control as it is not dependent on you.