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.
Nazo@mttaggart Yeah, I can verify firsthand on this... I got around more than a few things my parents tried back in the day. All it ever does is make everything harder and worse for everyone.
The best thing they ever did was just trusting me in the end.