18 Jun 12
08 Oct 13 9:37 am
My site suffered a similar fate, I had been slowly link building with blog comments on relevant sites and slowly crawling up the rankings, at best page one Number 5. Like you I have never "blackhatted" , bought links and always tried to SEO properly. On 23rd August I plummetted out of sight, reappearing at #15 and been there ever since.
Google claim that these updates are to improve search quality, but looking at the top 10 now , there are 3 of the thinnest content, obvious affiliate sites ranking, which seems to go against everything that is advised. One site is so bad I recon I could build a better one from scratch in 15 minutes. I would laugh if it wasn't so painful!
I did find some advice and information and have formulated a plan to attempt my return to the top 10, but I see an easy route, much of what is required is going to take a long time, especially if like me you are working alone and part time. Here is some of the info that seems to point the right way:
Duncan Carver " Ultimate Link Building" ebook
Eric Lancheres " Panda Breakthrough" on Matt Carters Blog
Bruce Clay "Silo Sites" http://www.bruceclay.com/eu/seo/silo.htm
Including more video into your posts ... http://moz.com/search-ranking-factors/survey
Best of Luck