Taggart 
It was my job for a decade to try to keep tweens and teens safe online. Let me tell you what you already know: no law or technology can do it. There are no lengths kids won't go to to talk to friends without prying eyes. The harder you try to lock it down, the dodgier their solutions will be.
Nini@mttaggart It's pretty transparent what they're up to but when hasn't it been when a moral panic (i.e. a loss of control over other autonomous humans' development) leads to a reduction in what the kids can see and do?