Over at Pubcon (an SEO conference) a surprise announcement – that Google, Yahoo and Microsoft have agreed to standardize on the sitemap standard that Google launched almost a year a go.
The XML sitemap format the Google developed is a way for website owners to publish a definitive list of pages on a website to alow search engines to find odd or hard to index pages. Google also have extended the system to provide additional stats and diagnostic tools that make a Google sitemap a very useful tool for any webmaster or SEO
The anouncement ( Video ) is here
The new home for the sitemaps standard is at sitemaps.org google have alos put the sitemap standard into the public domain.