I have a strange problem for which I have not found an answer yet.
My site was ranking on number three for a particular niche keyword for the past month. As of a few days ago, my site does not rank at all anymore that that particular keyword, but is still listed on google when I search for site:[mysite.com]. or for the direct URL.
I thought that my site was blocked or sandboxed for whatever reason google determined. BTW, I have not done any spammy link building activity or excessive keyword stuffing, I had just employed a normal linkwheel strategy with an anchor layer of about 5 pages and articles and about 100 backlinks to those anchor layer sites.
I have since written a request to google from the webmaster tools site for reconsideration of my page, and they promptly answered me that no manual anti-spam actions had been taken for my site and it should show up normally in google.
Has anyone had the same problem, and how have you solved it?
Many thanks for any hints!!