I know the importance of xml sitemaps and use them regularly. All of our websites have complete navigation as well as links to all 5 pages in the footer. Do we need an html sitemap as well? Please provide links to back up your thoughts.
Always think from the visitors point of view, You know what is there in each page, but the visitor donot.
Any including site map is good idea, why becaz now it have only 5 pages, in future if it go up then u have to include site map
a sitemap is a courtesy. so one is not "needed," whether xml or html. but if i provided one, i'd make it accessible for either. xhtml should take care of that?