Sitemaps for Websites are Automatic
As of April 11th there is no longer a need to manually submit your sitemap to search engines. Last fall, the major search engines (Google, Yahoo! and MSN) agreed on a sitemaps format. You can now add a simple line to your robots.txt file and let the engines know where your sitemap file resides.
Include the following line in your robots.txt file:
Robots.txt has been used to instruct the search engines how to crawl your site – where not to go on your site. This latest sitemaps implementation of robots.txt will now tell the spiders where to go when indexing your site..
Sitemaps are important, especially for new sites, will help improve your website visibility in search results.
What is a xml sitemap?