Nichita - 12:19 pm on Apr 19, 2013 (gmt 0)
I was affected by this penalty in the past. What I've done:
- checked the content of the pages (I've found 2-3 paragraphs in entire site copied by mistake by my content writer). I've deleted them;
- I've modified the internal links structure (very stuffed) - every page with about 15-20 links to other pages;
After a month, no effect in SERPs.
I've decided to change my domain -> redirect. I've changed the website theme, I've minimized once again the internal links (the sidebar and 4 related links at the end of the article).
I've performed the redirect and the positions have returned to previous ones.
So far (5+ months) everything looks normal and the website performs good.
This penalty is not determined by links (I am almost sure about that), is determined by an internal problem of the site (copied content / internal keyword rich anchor texts etc.)