It's the start of a very slippery slope. Where is the line drawn? The irony, of course - it's incredibly easy to find porn on Twitter (and I suspect Facebook)

It's the start of a very slippery slope. Where is the line drawn? The irony, of course - it's incredibly easy to find porn on Twitter (and I suspect Facebook) - but they're never going to be blocked. Parents could, of course, put the children's computer in a communal room...