Hi, I used SpinnerChief to spin a niche related article yesterday and I uploaded it to my wordpress static niche site. It was sitting on #10 first page (using a rank checker website) and now it has moved to #20? The content was good and definitely made sense. I changed almost all of the words from the original article, so I don't believe there can possibly be any duplicate penalty (if that even exists). What do you guys think happened?