Content is important for obtaining large reader ships and returning visitors. But over the years I’ve seen many sites that have page after page of 100% unique content but still fail to get over 200 uniques a day. In saying this, I’ve also seen small niche sites with correct SEO done that can pull 300-500 uniques from search engines from multiple keywords.
So SEO does play a major role in any site. But no serious Webmaster in the years to come can just rely on their content.
the original and helpful content is always make people link to the content,so usually it works