So here’s what you wanna do:

1. Write a good article on a specific topic. Pick 1 medium to long tail keyword and focus on that as you write.
2. Proofread and make sure the article is pretty solid.
3. Submit to EzineArticles and wait for it to be approved. EzineArticles is the best article site out there and only accepts unique articles so you have to publish there first.
4. Now use Article Submission Helper (free at http://www.articlesubmissionhelper.com) to ’spin” new versions of the article. By “spin”, what you do in Article Submission Helper is rewrite a few sections in the article to give various options for those sections. Then Article Submission Helper will randomly pick from the various sections and come up with a unique article.
5. Also in Article Submission Helper you can submit to a ton of different article sites and even rotate (“spin”) your bio to get different types of anchor text.

To give it a try head over to http://www.articlesubmissionhelper.com. Again, its total free and definitely worth a try.