Pjman - 6:05 pm on Aug 1, 2013 (gmt 0)
My mega-site was hit by Panda 1 badly and ever revision since. I never used GA before Panda. Now I do and the ship just keeps sinking.
I have 2 sites that I started with GA installed 2 years ago. They are doing great! There metrics are much better though.
IMO they don't use the data except for manual audits and G staff reviews.