According to the PR checker at onlyphp.com, which can be found at http://www.onlyphp.com/pagerank/index.php, the most useless site on Earth (and for that matter, on Mars too ) has a PR of 4. The site is http://www.command.com. For those of you who don't use Windows or DOS, COMMAND.COM is the "command interpreter", also known as a "DOS prompt".