XML Sitemaps: Organized documents that are created to tell Search Engines about the desired Web Pages within a website that are available to be crawled by Spiders. They are ordered by relative importance - not alphabetically, and by how often their content is updated. These XML documents are not meant for Web Visitors, and play a role in letting Google and Bing Webmasters Tools know the organization of the website from the most to least important URLs. #keyseo