Here's someone providing a great service. Simply collected up and categorized article and web directories, providing links to these. You can sort the sites by Google Page Rank, Hits (I presume hits on their site) and Rank (not so useful, since people can have one vote and wind up near the top), among others.
Frankly, this is a great idea and I hope they are making enough to reward their efforts and expand their operation. There is a lot more work to do (their niche article directories either don't exist, or some of their directories need some cross-tagging to fit - or something...)