I have been checking out the official google forums for people complaining about this issue and running any URLs they post through siteliner to see if I can find some sort of common issue for getting flagged. Here is some data from those who posted their URL Site A Duplicate Content: 38% Common Content: 33% Unique Content: 29% Pages: 799 Notes: Amazon affiliate site, each product listed has around 350 words. Product features copied straight from Amazon. Site B Duplicate Content: 12% Common Content: 22% Unique Content: 66% Pages: 29 Notes: Amazon affiliate site. Most of the pages are in this fashion "Best *Keyword* for xxx" "Best xxx *Keyword*" Site C Duplicate Content: 3% Common Content: 75% Unique Content: 22% Pages: 22 Notes: No real content, blank pages. It had one post 642 words which was an about page. Site D Duplicate Content: 6% Common Content: 17% Unique Content: 77% Pages: 32 Notes: Amazon affiliate site. Each product has between 300 / 500 words. They had amazon reviews iframed and cart buttons on every page. Siteliner will scan upto 250 pages to check for duplicate content. If your site(s) got hit, reply to this thread answering these questions Spun Content: No Lowest / Highest Word Count: 550 / 2,000 Duplicate Content: 9% Common Content: 18% Unique Content: 72: Pages: 51 Affiliate Program: Amazon Notes: My Site. Content is unique but not created by a native English speaker so it can be a little off. I submitted a reconsideration request almost immediately because I felt it was a false positive. On an unrelated note. The people who post "Help" on the offical google webmaster forums have got to be the most arrogant pricks online.