When a user lands on your site for the very first time, they may not find the information they are searching for quickly, without having to search deep into your site. Site structure may not be a large factor for most of the ranking algorithms. Search engines use the structure of your site to better understand your content and the relationships between subjects on your site.
SEO is more than just content and links. There are so many factors that impact your site’s online visibility. Taking the time to build a solid information structure will pay off in the long run. Know who your users are, and structure your site in a way that makes it easy for them to find the content they need.
Read more @: http://searchengineland.com/seo-benefit ... ure-277456