It is no secret, search engines like site maps. Site maps allow search engines to find all of the pages of a website. Now you don’t have to submit your sitemap to each of the major search engines. As of April 11, all of the major search engines are able to locate your sitemap by including a single line into your robots.txt file.
With the added time savings, you can create even more content for your website, but don’t forget to update your sitemap.