Google, Yahoo! and Microsoft will now all support the Sitemap 0.84 XML protocol. Released by Google last year under the Attribution/Share Alike Creative Commons license, sitemaps is an excellent way for webmasters to inform search engines about URLs on their web sites so that search engines can more effectively crawl them. This announcement came in the benefit of all webmasters who implemented sitemaps on their website, the same website should be now supported by Yahoo! and Microsoft. A good news for everybody I think. Via Google Blog.