The most important thing about article marketing is to make sure you are always writing and submitting articles
. From my experience the day you stop writing and submitting articles is the day your site starts to go down. Did you know that Google will change the site in the top spot if it looks stagnant? Google is known for doing this that you wouldn't think of and this is why once you hit the top spot in your specific keyword you need to keep doing what you were doing or else you will lose your spot and also your lifeline to earn money quickly.