This article will guide you through the main  reasons you should be using article writing as part  of your SEO efforts to gain backlinks and link  popularity, or in other words, turning content into  link s and traffic. Getting targeted traffic is a  direct result of this process. This will apply to  both new and existing sites, and I am covering  here what to do when writing articles. 
Write only about what you know well.You should focus on known topics that pertain to  your target market. As your articles are  informative, you can submit them to article  directories and websites accepting new content  and articles that publish similar ones to what  yours is about. You can get strong referrals from  articles that were submitted using article  databases. Keep writing 2-3 articles weekly,  making sure they are getting submitted at similar  rates.
Article partitioning and printable versions.Splitting articles into parts is a great way to  make a subject easier to digest by topics and  having your visitors follow them by series. It does  also help when you take an article for review and  you add your comments in different color or bold  them. Printable versions are an important addition  to the original format of your articles, highly  appreciated by users, and does not fall into  duplicate content penalties at all. 
The power of links and your article. Use linking within your article to expand  information sources or further detail topics.  Reference pages, news sources, forums, bog  posts, are example of resources you can offer  and the user can choose to follow if needed. Now,  it is equally important that your links are well  defined and easy to spot by using standards when  possible.
Apply SEO principles to your article.It is important to create titles and headings that  relate to what the article is about. Also, try to  keep the article length to no more than 500  words, written with simple language, and providing  clear and useful information. Always impart  concrete knowledge to your readers. You should  focus on the most important points in the topic,  outlining the key areas of it. To do this, you can  use headings, bold type and lists, like in the case  of this particular article.

There is a lot more to article writing, but every  situation is different, and for every website, the  application of concepts discussed in these areas  are different as well.