A Site Map is used to help the search engines, like Google
and Yahoo, find all the pages in a web site. This is
necessary to get all of a site listed on a search engine..
X-Plane Manual
When Reading the Screen just won't do.
Even with a small site like this it is still necessary to
put a site map up for the web crawlers sent by search
engines, like Google, Yahoo, Dogpile and Ask.com to name
just a few.