There are plenty of great packages out there being maintained that do so much more than this, it's time for this one to go to sleep ;)
Build for Umbraco 6.x and 7.x +
Adds a Document Type and Template to automatically generate a Search Engine Sitemap from your publicly available site content.
This is based on the Cultiv Search Engine Sitemap (http://our.umbraco.org/projects/website-utilities/cultiv-search-engine-sitemap) however it has been re-written with the new API in mind as a Document Template instead of a Macro.
All that's required is to add a Sitemap node to your existing content tree and submit it to the Search Engine WebMaster sites.