I think the biggest problem is that parents have less and less right - or indeed, ability - to monitor their childrens communications and function as decent and

I think the biggest problem is that parents have less and less right - or indeed, ability - to monitor their childrens communications and function as decent and responsible parents. Inevitably, were this implemented, someone would find a way to turn it against parents' rights to monitor their children. And confounding this issue is the fact that the major platforms (Facebook, et al.) simply don't want parents to have this kind of control over their children, because it will effect their bottom line. Children with less adult supervision tend to be far more easily manipulated. Its not just child diddlers who want this manipulation to proceed un-impeded by parental oversight - its Facebook, et al. too! So this evil campaign is going to get a lot of corporate support, I fear. For the wrong damn reasons. (Disclaimer: am an angry parent who is sick of the shit my kids have to deal with online... but who will also NEVER give up personal encryption as a right.)