XML Sitemap? What in the world is that you might ask. Well not so long ago Google came out with a way for webmasters to tell Google about their pages. The most common way is to use an XML sitemap. How does it work? You create a sitemap, then tell Google where that sitemap is, then they will download it and then maybe crawl some of your sites, and just maybe add them to their index of websites.

Since then a few of the other major search engines jumped on board the wagon, and now it is supported by Yahoo and Microsoft too.