Completely disagree that this is just an "unintended consequence". This is exactly what David Cameron wants. To muddle the waters, and say they are blocking "obscene" stuff, when in fact they are blocking free speech sites and the like.
Porn filters are always abused (intentionally). Always. I can't stress this enough. You should've learned from the Australians who tried implementing this sort of filter before, too, and it ended up a miserable failure. Not only can you not implement such a system without a ton of "unintended consequences", but it's also very trivially abused, too, by those in power, and they could abuse it for many years before the public even realizes it.
Porn filters are always abused (intentionally). Always. I can't stress this enough. You should've learned from the Australians who tried implementing this sort of filter before, too, and it ended up a miserable failure. Not only can you not implement such a system without a ton of "unintended consequences", but it's also very trivially abused, too, by those in power, and they could abuse it for many years before the public even realizes it.