Web site operators posting sexually explicit information must place official government warning labels on their pages or risk being imprisoned for up to five years, the Bush administration proposed Thursday.

A mandatory rating system will “prevent people from inadvertently stumbling across pornographic images on the Internet,” Attorney General Alberto Gonzales said at an event in Alexandria, Va.

Three things:

• I suspect that the majority of stumbling across pornographic images online is anything but inadvertent.
• You know what I do when I come across something on the Internet I don’t like? I go somewhere else.
• The definition of sexually explicit covers close-ups of fully clothed genital regions?