My site www.papofurado.com was created in 2008 august, e disappeared disappeared results of Google searches on 18/01/2011, my difficulty in finding the cause is through intentionally did not do anything that might have caused this penalty. Not working with purchases or sales links, I have no links to partners, not applied any black hat technique and did not change on the site today.
The only question I could think as a possible reason would be a considerable increase of about 70% on visits in 2011 caused by visitors coming in the original articles and no attempts at manipulation, but that generated a spike in the graph analysis(which put the attachment to view) at this time the site fell dramatically around 90%.
I therefore ask for help diagnose possible reasons for this penalty from
I am available for Further Information!