One of the fundamentals for constructing a website with SEO in mind is ensuring that all of the pages for the site are accessible to both the site’s visitors and the search engines in as concise a path as possible. Internal link structure is an important factor in determining a site’s performance in the search engine results pages. The faster a search spider can access all of your pages mitigates server latency and will make sure your most important pages are served in search results. Also, by linking explicitly to all of your top level, category and service level pages, you are alerting the search engines to their relative importance on the site.
If using less SEO friendly coding elements is something you just can not avoid (because of CMS constraints or the website architecture is not conducive to coding manipulation), web developers can always make certain that their site’s pages are also accessible via the internal, html sitemap page, the external XML Sitemap pages and footer navigation.
If you want to analyze the internal links on your site, Google Webmaster Tools has a section that will let you view how it sees these links and how many other links from your site are pointing to them. From the Webmaster Tools dashboard go to: Your site on the web>>Internal links. This will list the pages on your site (listed underneath the “Target Pages” column”), along with the associated count of links Google has found to be pointing to them: