Google’s John Mueller in this mornings Google Hangout said at the 4:37 mark into the video that Google doesn’t tend to give advice around algorithms.
Yes, for manual actions, they try to give specific advice. But when it comes to being hit by Panda or Penguin or any search quality algorithm, Google says they tend not to give advice.
He said in response to being asked for advice:
Here is the video clip:
From experience watching Google help webmasters, this is accurate. Truth is, I think it is often very hard for Googler’s like John Mueller to find an example of why a site may be hit by Panda. Often you see him struggle with it when he is asked about specific cases.
Forum discussion at Google+.