Pirate Kitty said:
It's a terrible and flawed solution to a terrible and sickening problem.
Just how to solve the issue of cyber-bullying is beyond me, however.
It's actually fairly simple to fix (and not just cyber-bullying, all bullying in general). This fix won't work for everyone, because oftentimes people simply aren't willing to do it, but it is pretty straightforward and while it won't eliminate the act of bullying, it will make it almost entirely impotent.
This magical fix I speak of is to teach students that they're not always going to get along with everyone, that life isn't all sunshine and rainbows. Sometimes, life sucks. The only thing to do about it is to pull yourself up and try again.
Explain to children that it doesn't matter how many people like them, or that the head cheerleader or Quarterback or whatever hates them. The only opinions that matter are from those who have earned the child's respect. Everyone else can fuck right off.
And before I get yelled at for being insensitive and all that, this method worked wonders for me.
As for the question in the OP: The whole idea is ludicrous. Gross violations of privacy don't make anyone safer. All it does is open the doors to abuse of all sorts.