More than 100 articles posted in over 300 websites with links back to your home site are very effective advertising. One of the main reasons for using articles to promote your website is that in each article, you are effectively creating a link back to your website.
thats exactly right, writing article is an amazing way to do that. But onething that we need to make sure is that, the quality of the article if the quality is not good then its of no use.