About time...
It is a joke - you are 13 but
-you can't watch a 18 film from blockbusters as it might damage you
-you must be shielded from ads that could be sexy, racist , etc as it might shape your thoughts
-you can't play Manhunt 9 or Doom 56 as it might cause you to go nuts with a knife
but you can simply go online and view hardcore smut or anything else - pretty pointless having the above then isn't it - we as a nation agree that censorship is requried as people are to young to recongise the difference between fact and fiction and often the lines get blurred but then we don't enforce at an ISP level - anything else is pointless as it can be broken easily
The internet is a media just like the above and requries central control just like the above - websites are a start but then you have p2p, etc