600+ Article Directories List ---------------------------- http://www.directorycritic.com/article-directory-list.html
I have a list of over 1500 article directories with updated (December 16, 2009) PageRank. The excel file also have other usefull information like the type of script (ArticleDashboard, ArticleMS, ArticleBeach, ArticleFriendly, Wordpress, Interspire, Custom Script, PHPLinkDirectory), if it requires Sign-up CAPTCHA, Log-in CAPTCHA etc. I have spent countless ours to clean up the list and wouldn't mind sharing it at very nominal cost of $99 USD. PM me if you're interested.