I was ranking for "rupp mini bike" in position 3 for about 2 years now. All of the sudden this weekend I rank at 588, not even a competitive search phrase. Domain is 3 years old, has 60-70k pages in index, and I have dropped about 500-1000 places in google for every search time I ranked for and have gotten no traffic from google since Friday. I was wondering on dup content but hope this major slam is just the dance, about 10k pages are all original content, the other pages are amazon affiliate store pages.
Still no traffic from google, they will turn me into blackhat yet, when they can cost perfect whitehat sites to lose traffic/revenue for an extended period of time.