easily share your sitemaps with all search engines at once

Hi there. I saw this news couple of days ago and i realise that many heavent heard or read about this so i'll post it:

Autodiscovery gives siteowners the ability to easily share their sitemaps with all search engines at once, without the overhead of manually submitting them to each one. In order to share your sitemap with the crawlers at large, you simply provide the following line in your robots.txt file:

Sitemap:

Where is the complete URL of your Sitemap Index File (or your sitemap file, if you don't have an index file). This directive is independent of the user-agent. so as long as it is present in the robots.txt file, all engines will be able to find your sitemaps.

This removes the need to individually submit sitemaps to each engine - simply add one line to your robots.txt file, and they will find your new and updated sitemaps automatically.