Originally Posted by pacifich
In general, there are two types of sitemaps.
The first type of sitemap is a HTML page listing the pages of your site - often by section - and is meant to help users find the information they need.
While this type of sitemap can help both visitors and search engines navigate your site, it's different from an XML Sitemap that can be submitted to Google using Webmaster Tools.
XML Sitemaps - usually called Sitemaps, with a capital S - are a way for you to give Google information about your site.
Thanks for the information.. but i am still bit confused regarding which is more beneficial from SEO point of view.. Is there any other format other than nested structure of sitemaps designs to make it more easily to read??