A HTML sitemap is a bulleted outline in text content of the site’s navigation. The HTML sitemap was traditionally a technique used by websites to enable search engines to crawl their entire website, before the newly formed .xml sitemaps were introduced. However, an HTML sitemap still helps people to navigate websites, and to support search engines in their pursuit of finding and indexing all website pages in an effective manner. The HTML sitemap will also improve your website’s chances of getting your pages ranked higher in search engines as it provides an improved link sculpting profile within your website.
The HTML sitemap needs to ensure that each URL is linked from the relevant pages. In addition, the links need to contain the appropriate anchor text, which I suggest should be the “page title” or “main subject” for each page. The last optimisation tip is to ensure that the sitemap is prominently linked from your website to ensure that it is found. In view of this, I would recommend that you insert a sitemap link from every page within your website. This will have double benefits; ensure your content is found by search engines, and secondly, it enhances your site link structure.
It is now debatable whether this technique actually works for search engines any more.