Apart from creating quality content, one of the key to SEO is Link Building. There are various ways to build links and these include submitting to directories, link exchanges, forum posting, commenting and article submission. Article submission may not be everyone’s preferred way of link buidling as it demands more effort in writing and submitting to article directories. This doesn’t mean that writing an article and submitting to every crap article directories out there on the Web. Link from high PR article directories are valued and taken seriously by search engines. In my journey to better search rankings I have come across of a handful of high quality article directories. Submitting your keyword rich articles to these directories can certainly bring in a boost to your search engine rankings. I don’t claim this to be the final list, there might be better one’s available, if you find a quality ranked site not available in this list, please let me know.

PR 7 Rankings

http://www.content-articles.com

PR 6 Rankings

http://www.articlecity.com
http://www.ezinearticles.com
http://www.goarticles.com
http://www.articledashboard.com
http://www.articlebiz.com

PR 5 Rankings

http://www.articlemarketer.com
http://www.articlecube.com
http://www.articlealley.com
http://www.advertisingknowhow.com
http://www.add-article.com
http://www.blogwidow.com
http://www.articleson.com
http://www.articles-hub.com
http://www.virtualwordpublishing.com
http://www.searcharticles.net
http://www.niche-content-articles.com
http://www.isnare.com
http://www.ideamarketers.com
http://www.goarticles.com
http://www.hotlib.com/articles

NOTE : All submission to these directories are free of cost.