NC-17 rated blogs?

I came across this interesting article on BBC on whether blogs containing explicit/suggestive images or content be branded with a content rating or a warning? I personally believe they should, and in fact, a large one at that. Those warnings should be targeted for the adult readers who have developed a sense of conscience, not children.

It is the responsibility of the parents to ensure they monitor the internet activities of their children by installing family filters, or whatever is prudent to ensure they are protected from sexual predators, illicit activities and mature content. Take a look at the article and a poll on BBC's website here.