XML Sitemaps are an simple way for webmasters to tell search engines about pages on their web site that might possibly be crawled by their robots. A typical XML Sitemap file lists every URL, together with specifics about when it was last updated, how typically it generally changes, and how very important it is, relative to other pages in the webpage). This assists search engines to much more intelligently crawl your web-site. In November 2006, Google, Yahoo! and MSN joined forces to ...