A Site Map is a model and set of web pages of website's content which is designed to help both users and search engines navigate the site. Site Map can be a hierarchical list of pages with links organized by topic an organization chart or an XML document that provides instructions to search engine crawl bots. Site Map are specially important for sites which use Adobe Flash or JavaScript menus without include the html pages links. Google Site Map to help Web crawlers find dynamic pages, which were typically being missed. Bing, and all other search engines also support this protocol.