If use Google Shopping & Merchant services you will probably see soon if not already have seen this message “File pre-processing:Failure” :-

Google Shopping & Merchant File pre-processing:Failure

On Friday 5th September 2014 Google carried out another Panda refresh. This has had webmasters and SEO consultants in a spin complaining about yet more traffic loses.

If you have received the message from Google saying “Thin content with little or no added value” then you need to watch this video of Matt Cutts explained how and why these message have been sent out:-

Google Message “Thin content with little or no added value”