Welcome to the Q&A Forum

Yes.

Well the term I'm trying to rank for is "Lack of sleep." My website: http://www.lackofsleephq.com I've built a lot of no follow links via blog comments mostly. I'm trying to develop more web 2.0 strategies and find ways to get more dofollow links as well. But currently, my website is in position 200 or so per google webmaster tools.

The question you maybe need to ask is 'Should I submit my articles to article directories in the first place". Many on here will tell you the answer is no, that you should put the content on your own website and not on another website at all.