Writing and sharing articles is a great way to build inbound links to your site. Here is a list of article submission sites that I found useful:

• Work.com – Articles for people in business. Submit your guides and tutorials, and be sure to include keyword targeted inbound links to your site. Guides that receive good ratings are also posted on business.com category pages for an added bonus.
• Squidoo – Create your own Squidoo ‘Lens’ with your guides, recommendations and expertise. Again, be sure to include keyword targeted inbound links to your site as your lens page is DoFollow.
• EzineArticles – This site hosts articles from a wide variety of topics. Links are DoFollow but images are not allowed. Articles posted here are available for other webmasters to post on their sites (hopefully with the backlinks still intact).