Scratching my head over this one; over the last couple of years I have slowly built up couple of thousand visitors daily from Google natural listings to my personal finance site at http://www.QCK.com, then one day (April 25th) POW!! Not removed completely, but man oh man severely dumped down the listings in ALL key terms like compare pensions, secured loans etc. Even the site name itself "QCK" formerly on number one spot, now several pages away. I still have Google PageRank of 5 on most main pages.
So what could have happened? Searching for an answer the next day I came across a site that had exactly duplicated over 300 pages from my site and replaced some of the ads with their own affiliate links. Seems it had been up around six weeks or so. I got into a hot lather over that and within 24 hours the site's affiliate link providers had removed them from the networks and within 48 hrs the site itself was disabled. Filed a Notice of Infringement with Google, and the infringing site's Google listings are now down to 2 (dead links). But this hasn't helped our site. Maybe this has nothing to do with anything. Reread Google Webmaster guidelines a dozen times, and we don't do any black-hat stuff like cloaking, hidden links, work with SEO firms or link-farms etc.
Communicating with Google is like whistling into the wind. People who own sites and have worked hard to build them up with solid content and in-links to get up somewhere in the World's No. 1 Search Engine are not regarded as customers. Completing their 'feedback' form gets you an automated email with standard help links which you then reply to saying "Yes I read all your Webmaster stuff" then .. brick wall 1.
Sure I spend a lot on Google Adwords, and I have to say my rep is great, always responds etc. But in this case she says it's Chinese Walls bro. Sure, she can put a word through the internal channel but basically the Other Side are very protective of their Algorithm and Adwords people are not trained in Search. Brick wall 2.
Any clues from enlightened minds out there ??