Article marketing is a good way to drive traffic to your sites but it is very effort intensive. You need to post a lot of articles to generate a significant amount of traffic to your sites
Also the way you write your article is important [more info at
http://www.affiliatemarketingintro.c...ing-Tips.html]
All said and done bum marketing works but I don't use it as my sole source of traffic
I also am aware that some people use article submission software and post to a gazillion article directories
I have only ever posted manually to a couple of directories but have found the results to be quite good