OMZen - 5:46 am on Jun 15, 2010 (gmt 0)
What kind of link profiles those sites had before ?
Article marketing / submitting to thousands of article directories is utter waste of resources. But I donít think they are cause of your dramatic fall across the board.
Otherwise itíd be too easy to nuke competitors by just submitting their sites to those crappy article farms.
Google seems to have tightened the noose further on low quality links and whatever little link equity they used to pass seems to have been killed thereby leading to noticeable rankings reset.