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"You remember that list of things that Matt Cutts said they looked at as regards to what makes a quality site and then Panda did his stuff. "
Hey presto the ultimate algo - SEOs mess about for years trying to think of technical fixes rather than thinking about making a great site that people love.
everyone is trying to get out of Panda by making changes from that Matt Cutts and Amit Singhal Q & A.
NOT the things that Matt Cutts mentioned - they are the physical and visual attributes that a good site would have. However that results in certain user behaviour and engagement data that might be the actual Panda algorithm.
suggy, as far as I see, it does affect all pages site wide and it is more keyword specific. A page continues to rank high for one keyword but not for the other one that used to rank as well.
Now for the interesting part; I think the pandalization stems from links. We did some intensive low grade link (articles, lenses) building we did around the brand (I know but it was a minor brand and quick and easy).
If that were the case, then ALL my competitors would be Pandalized. That is all the links they have. Low grade spam.