I would recommend useful, and helpful content.
If you concentrate on usefulness of your content/articles, you will automatically start receiving back links from other webmasters.
Along with this people will start subscribing to your blog or website's RSS.
If you are publishing content within your business niche, then I do not think that you need to worry too much about SEO friendly content.
Ofcourse, you can add some cool headings and <strong>tags to highlight the main essence of your website/articles. This will help you gain natural links and higher rankings on search engines.
