claaarky - 8:58 am on Jun 27, 2012 (gmt 0)
"Has Google ever gone on the record saying that user metrics matter for Panda? Or is that just a huge assumption everyone is making."
Believe me, very few people seem to be making the assumption about user metrics mattering for Panda. I've been trying to get people to think that way - some are getting it, some don't want to. Panda is all about user metrics and producing a good user experience.
Sites hit by Panda are vulnerable to Penguin. Their user experience isn't good enough to overcome it.