Essentials for a site to be fully crawl able by Search Engines.

For a site to be fully indexed and in right category and to ensure that it is indexed on all related keywords is the foremost step to ensure high traffic. One of the simple and quite successful method for getting the site fully indexed by a search engine is to have a site map on the home page. It helps optimize the site by getting the interior p[ages of the site fully indexed. For a complex site dealing with multiproduct of options, it does help guiding a customer to know where a particular product or information is located. While you may have grouped a particular information in one category, your visitor might be expecting the same in another category. In the absence of it, a visitor may get lost locating particular information on your site. In this situation, a site map, which is essentially a html link to your internal pages, does help.

Don’t consider site map as a replacement to the professionally designed navigation on the page. Any visitor would essentially like to navigate himself and would expect to reach to desired level of the page himself. Only in some cases, where he is convinced that the site has meaningful information and he is not able to reach the desired page himself, would he like to take the help of site map.
This site map helps retain a customer when he is helpless to locate the desired information himself and is about to exit the site. to search engines, a site map is a fantastic way to get to see and crawl every single page in your site. When optimizing different pages in your web site for different keywords, a Site map is a perfect solution for ensuring that a spider can get to every one of those optimized pages.
Further and more importantly, a Site Map provides an opportunity to send link reputation to a particular page. Link reputation is the page rank and other credentials earned by the page from various search engines as Google, MSN, Alexa etc and this link reputation helps many search engines decide the placement of this search result in its gross data base of search results.
Site map is also an additional way to distribute Google page rank. If your site map is just one link off of the first page, it can pass a significant amount of Google page rank deep into your web site. This helps every internal page earn ranking as your home page. This way, site maps allow you to use dynamic linking strategies to control page rank to deny or allow pages that it goes through your site.
Without any doubt, a good site map would get good rewards for your site.