On some URL's, such as those at Sitepoint, the pages can be located at say....http://www.sitepoint.com/article/1125. How exactly does the server interpret this with just an 1125 as the page number? The reason I ask this is because this looks much cleaner than http://www.sitepoint.com/article/article.php?id=1125, and I would like to try this on my site.
