As you know, you can get a good one-way back link to your site by submitting your article to article directory such as ezinesarticle.com. Besides getting back link, you will also be able to promote your products or your site.
Submitting article to various article directories by using hand must be tiring. Fortunately, 
there is free automatic article distribution which I’ve dug out the info from the Digitalpoint forums. This web-based tool, ArticleSender will help you to submit your articles to various tops article directories such as:
1) Article City
2) Web Pro News, and
3) Link Snoop
For your information, there are some good article distribution service that you can try out there such as ArticleDepot and ArticleSubmitterPro but of course they will cost you some money.
Currently, I have submitted three articles using the Article Sender service and quite satisfied with the performance. It will take some times but if you donated to the developer, your articles will be sent faster. There are support forums if you want to ask for any tips, suggestion, or help from the staffs.
Tips: The Article Sender service did not include submission to Ezinesarticle.com one of the high traffic article portals. Don’t forget to submit it there by yourself. If your lucky, your article will be featured in the high traffic page which will bring more people visited your site. 