A sitemap is simply a list of your pages in a single page layout. When a visitor goes to your site they can access the sitemap to find any pages that they are interested in viewing. Usually the sitemap is to benefit the people who visit your site and give them a quick and easy way to navigate your site.

A sitemap has a benefit for the search engines as well. This sitemap will let the Google robot see how pages, such as those in the fourth and fifth level, fit into your site. If you link to your sitemap page from your homepage, all of the pages listed in your sitemap will be no farther from your home page than the third level. This will encourage Google to index your entire site.