[user104658]

It's definitely a tightrope. Too much online and especially naivety/unawareness online is a huge problem. At the same time, you can't "opt out" and just keep your kids away from it as its such a normal part of teenage life these days that they'll just be ostracised in other ways if they can't take part at all.

The key for us has been open involvement and lots and lots of education/conversation so that she's already been pre-warned and prepared for the things she'll encounter. She also STILL tells us absolutely everything, well into her teens, which I think is not always the case and probably not something that can be orchestrated as a parent. I think it's just a helpful personality quirk that she has.