One of the best ways to make absolutely certain that every part of your site gets fully crawled by search engine spiders – especially the almighty Google – is to include a properly designed Google-friendly site map.
Many website users find site maps very useful anyway, because they can find a direct link to precisely what they want without having to go through several different layers of the site. However, when it comes to proper search engine optimization for sites such as Google, site maps make sure that you’re getting the most out of your SEO efforts, and all of your site’s pages.
The most important thing about laying out your site map in a way that is friendly to Google is to have it listed not only by category, but also by priority. Use the value that you give each of your pages to order your pages within the site map. The search engine spider will take in this order, and make assumptions regarding the placement of the pages on the site map.
Make sure that every page from your website is added once. This will make sure that nothing gets missed or left out. Especially when you’ve gone to all the effort to keyword optimize each of the pages on your site. The site map should be clearly available from all of the pages of your website, or at least the main ones. This is especially true of the home page.
Once you’ve finished, don’t forget to submit the specific sitemap page to Google…after all, that’s the last page you’d want the spider to miss!