Believe me, it's been thought of. But the idea of rating Web sites the way movies and videogames are rated is being revisited by the British government. British Culture Secretary Andy Burnham said his government "plans to negotiate with the US on drawing up international rules for English-language Web sites," the BBC reports. It adds that Britain's NSPCC (National Society for the Prevention of Cruelty to Children), which has already called on "computer manufacturers and retailers to install security to stop children finding violent or sexual content," said it welcomes Mr. Burnham's suggestions but acknowledges that it would be hard to enforce them. Here's Reuters's coverage.