More useful to you submitting articles in these sites ezinearticles, buzzle.com and other major sites.
All post here are positive with regards to article submission, but that is not the whole truth. There are also some negative effects (or risks) you will need to consider up against the positive effects. You can read about these in the following articles: http://www.seoco.co.uk/blog/5-reasons-why-article-submission-is-a-poor-seo-tactic/ http://www.thesitewizard.com/archive/syndication.shtml
Submitting to articles would be a good source of traffic. I'd do it myself, but I just don't have the time.