Of course I realize that every article submitted with a link back to my site is a good thing for link popularity and traffic but while I do good at finding the right keywords for articles and fining interesting subjects to write about I am not a good witter so I out source writing using a ghost writer. That means each article cost me money. So I want to know if adding new articles to the same 5 or so article directories and Google's knol, I want to know if it makes any difference how frequent I submit new articles. Right now I am doing this 2 times a week Will that work or do you have a better recommendation on how to handle this.
I think you'd be better off looking for more places to put your articles. because if you only restrict yourself to 10 websites, you will have backlinks from 10 different domain names. You need to submit your articles to more places than that. 2 times a week is pretty decent, yes.
Don't submit it to frequent coz G will categorize it as link spam and thus your site will be penalize. Just an advise for you,need to wait at least 7 day before submit new article.