One of the newest places to submit articles that you have written is Digg. This is a huge social network which readers actually despise anything that looks like marketing. You probably will not last two minutes on this site, which has a "burial" feature that kicks overt displays of advertising right off the sight. However if you are very clever about the way you position yourself on Digg you can use it as a marketing tool to bring more visitors to your site and that may mean potential link partners and advertisers. If you are successful at posting writing on Digg then you will likely experience a ton of traffic being brought to your site.
Digg is all about user powered content. Everything is submitted and voted on by the digg community. After you submit content, other people read your submission and Digg what they like best. If your story is popular and receives enough Digg vote, it is promoted to the front page for the millions of visitors to see. So how can you turn this into an SEO tool?
The first challenge is to get people to give a Digg vote to your posting. This means having an article on the top page or linking to someone who has a story on the top page. However even after you manage that you need to have a fantastic title and summary or the savvy, marketing hating readers on Digg may not even glance at any URL that is attached.
The main way that Digg can be part of a good SEO strategy is in driving a lot of traffic to your site quickly by getting in the top ten read articles on the first page of the site. This creates the kind of buzz and credibility for your site that just can not be bought using keyword articles only.