The Page Ranks have dropped for some of the article directories. Here are some of them: goarticles.com - used to be PR 6 but now it is PR3. a1articles.com - used to be PR 5 but now it is PR4 bigarticles.com - used to be PR 5 but now it is PR0 articlenexus.com - used to be PR 5 but now it is PR3 Why does it happen? Any ideas? I am wondering if it is worth submitting articles to these directories. .