Sitemap is very important component of a website or a blog. A search engine spider tries to find it first because it contains the links of all pages with titles. It is just linke and index in the format recognized by the search engine. The search engine spider can easily crawl your site by using it. There are so many website which are generating sitemap for free for example freesitemapgenerator.com. Generate your sitemap. Put the sitemap.xml file in your website folder and then put its address in robots.txt file.