Always remember to submit to article directories that have high pagerank. And beware of nofollow article directories.
Article Marketing with EZA and eg. clickbank works very well - for me it works way better than what adwords ever did for clickbank. Articles should be +/-300ish words, can be longer too. Just check authors on EZA which have a lot of views, their writing style, how they promote links etc..should get plenty of ideas.
It would help your income a lot, Kenzy, if you stopped just repeating what you've heard from so many others who have done no testing, and actually tested things out for yourself, sometimes. You might get a surprise or two.
Really, i dont see the pt in submitting to 100s of other article directories. If you submit to EZA, and a rewritten article to goarticles and articlesbase....you cover like 90% of your traffic and sales. I dont think its worth to submit to all the others.
The other directories are for the backlinks only. If you do one good article to EZA, and have the rest anchortext backlink to the EZA article, it will eventually climb the serps. If you have a decent auto submitter and accounts set up, it only takes an extra 5 minutes to do a mass submit.