|Sitemaps help users and bots find webpages and information on your site.|
The .xml one you can make with a free tool at XML-Sitemap.com. You then log into your Google Webmaster Tools and upload it. Now the bots are more likely to find and index all the pages on your site.
The Html sitemap is just a web page listing all the links within your site, so your users can easily find what they are looking for. Google and other search engine love user-friendly sites so you can't go wrong with making things easier for the visitors to your site.
|Html sitemaps make your site more user-friendly.|
You can use important keywords for the various pages on the html one, in fact you should use keywords. After creating the sitemap, put a link to it in the menu where it is easy to see and use.
Here's an actual Html sitemap for DawsCo Coffee Services, a Calgary office coffee services company.