Internet is all about CONTENT
People surf Internet to look for information, or content. So you can see the importance of providing good content at your site. If you can provide visitors with great contents related to your keywords, I’m very sure your site will be attracting good traffic. If you have good content, you will find that people will be recommending your site on their own sites or blogs via that highly valuable backlinks.
A site with top content with no backlinks is still much better than a site with poor content but have hundreds of links from link farms or FFA sites. This is because gradually, this site with great content will be attracting other webmasters who may find that your posts to be useful hence he or she may reference it on their webpage.
Also webmasters tend to link to relevant web pages that they find useful, so their readers can also share this useful resource. It’s a win/win situation for you because you get a valuable back link and a little boost in traffic absolutely free.