A submitted site to Google and it really takes time to be crawled and listed in the Google directory. Then at last my site was finally listed, but it doesn't last that long since the next day. For web designers and owners who are submitting their sites to Google the first time, a simple guide in creating your sitemap. In general, there are two types of sitemaps. First type is a HTML page listing the pages of your site often by section and to help users find the information they need. The second type is XML Sitemaps usually called Sitemaps, with a capital S are a way for you to give Google information about your site. The simplest terms a Sitemap is a list of the pages on your website. Creating and submitting a Sitemap helps make sure that Google knows about all the pages on your site, including URLs that may not be discoverable by Google's normal crawling process. A Sitemaps is particularly helpful when your site has dynamic content; your site is new and has few links to it and your site has a large archive of content pages that are not well linked to each other, or are not linked at all.

 

So a sitemaps provide as additional information for your site to Google, complementing their normal methods of crawl the web. It will help them crawl more of your site and in a more timely fashion, but there's no guarantee that URLs from your Sitemap will be added to the Google index because sites are never penalized for submitting Sitemaps.