In a nutshell, it claims that the site has been siezed and shut down by the Department of Justice. I am not familiar with this website, but it was just pointed out to me on a blog I frequent. I know the Department of Justice siezed a couple of websites selling drug paraphenalia, but the pages they put up their place looked nothing like this one. Some of the wording strikes me as suspicious, too. For example:
None of which I thought were a crime.
Is this a hoax, or should I start digging a heavily fortified rec room for myself?
OK. Mystery solved. It is, as I suspected, a hoax. It was presented to me as deadly serious Big Brother-type stuff. It sounded fishy to me, but these days, who knows? So naturally, I came to the SDMB–your online clearinghouse for all of your ignorance-fighting needs.
Not necessarily a “page not found”. I know of some cases where sites really were shut down, but they were allowed to put up a short, single page telling what happened.