Alex _V  

Article submission directories allow two types of links: "no-follow" and "follow" links. The difference between the two types of links is that:
* "no-follow" links instruct the search engine spiders not to forward the link to the nominated website; and
* "follow" links instruct the spiders to continue and spider the nominated webpage (site) in the link itself.

Type of links will take the visitors to the nominated website in the link so the website will generate traffic. However, if you are submitting the article to achieve better search engine rankings "no-follow" links will not achieve that result.

Therefore, to improve your SE rankings just submit your articles to article submission directories that allow "follow". Now, how do I know which directors allow "follow"? Very easy you will need to go to the publisher guidelines" section of it explains what kind of links allowed.

For your own reference that the different type of links look like this:
* "no-follow"- a href="http://www.example.com/" rel="nofollow">anchor link text<
* "follow"- href="http://www.example.com/" rel="follow">anchor link text<
In the above listed examples the example.com is the website where you want the link to be pointing and "anchor link text" is the text that will be displayed on the webpage. The website address will be visible to the visitor it's only used to guide the search engine spiders and anchor text is a link for the visitor to click on.

Anchor text is very important for such search engine ranking. The more relevant keyword keywords are to your website higher weight this one-way link will have.