You appear to be being filtered down by an Algorithmic "penalty". It looks like anchor text over-optimization is the most likely culprit here, but it is almost certainly link-based at least. Probably a combination of anchor text, lack of link diversity, link velocity, etc that triggered the Penguin filter on you. Based on my own experiences with that particular animal I can say with a fairly high confidence level that it is where your problem lies. That's the bad news. The good news is that it is probably only that particular page and the particular KW phrases targeted on that page. So you should be able to successful rank other page/KW phrase combinations. You might find it very very difficult to recover that particular page/kw phrase(s) combination, however. Good luck to you though! Regards, MM
