Never underestimate the power of content with the search engines. As many SEO gurus say "Content is King". They aren't kidding. Not only do search engines reward your website when new valuable content is added to your site, the opportunity to use this content for link building has become just as important.
With the rise of Social Media, content has become even more important than before. Links from Social Networking and Bookmarking sites are extremely influential within Google's algorithms and why wouldn't they be? Social Networking and Bookmarking sites are users directly telling Google that they find a page important. It only makes sense that Google and the other search engines would reward this.
However, while writing good content is an effective component to your linking campaign don't neglect high quality directories like Yahoo, DMOZ, GoGuides and JoeAnt. These directories still have a great deal of influence with the top search engines (Google, Yahoo, MSN). Traditional organic linking is still an influential piece of the pie. Quality directories and links from authoritative sites still play an important role with search engine positioning.
By offering content that is non-marketing in nature and offers valuable information to users, you are creating your own organic link campaign. You can drive traffic to your website, increase brand recognition as well as increase sales, all by providing content that is non-marketing. You're marketing by not marketing!