Google Blog, has posted that Yahoon and MSN are officially supporting sitemap protocol, a feature introduced by Google about a year ago.

Submitting a site map to Google does not guarantee that your site will automatically be included into the search results, but it does offer more information about your website to search engine crawlers so they can in turn do better job on crawling your website.

Many web-masters has reported that the sitemaps, that were originally generated for the use in Google Webmasters Tools, were frequently accessed by Yahoo and MSN crawlers. It is only the matter of time for the rest of the search engine to join in as the web becomes more and more dynamic with constant “inflow” of fresh content.