If you want to know how I drive traffic to my niche blogs with articles, go here...
How To Generate Traffic With Articles
I don't do anything fancy. I don't use any special tools. I really don't even pay attention to things like keyword density or latent semantic indexing.
What I recommend is great if you outsource your article writing. It's actually easier to follow my instructions than it is to inject or stuff keywords into an article.
How To Generate Traffic With Articles...