Before I do this very often I want to know if I submit 15 articles, with all of them submitted to 5 article sites with all 15 going to each site will that create 60 back links that will help improve my link popularity. I realize this is likely not to be enough back links to help my link popularity but want to know if this is an effective way to increase link popularity. How many back links do I need for strong link popularity if I submit articles and submit to regular directories?
Submitting articles helps build backlinks. The number of links you need depends on your niche. Article submission should be done as part of a wider seo campaign.
Mix all ! Get some BL's from directories, articles sites, from link exchange, posting on forums, blogs etc. And also try to get more one way links.