Re: @Marvin
a man was convicted for owning a book of photographs
And you're the one complaining about government propaganda?!
I presume you're referring to "The age of innocence"? Of the two well-known recent convictions where it featured, one was overturned and the judge criticized the CPS for bringing it, and the other was of a man who had almost 20,000 child photos in addition to the book.
As Marvin said, this is just more theatre, like airport security. There's an election coming up, and politicians (that *we* elected, in case you missed that) are Doing Something to get the Mumsnet vote. They really don't care if it works or not, as long as something is seen to be done, and they get votes.
Society's public attitudes to porn go in cycles, look at the Lady Chatterly's Lover trial, or the banning of Wilde's Salome. Banned because a vocal minority got offended, unbanned after a larger group complained, now generating a "Meh!" attitude for most people. To suggest that mandating some pointless and easily bypassed user-selectable filtering is going to lead us all to wake up in N. Korea next year is even more detestable propaganda than the "think of the children" paranoia that infests mumsnet & co.