dibbern2 - 5:10 pm on Apr 27, 2011 (gmt 0)
I'm seeing Panda effects split across two very different groups of searches. Primary terms, very short 1 or 2 words, got hit hardest. This is as should be expected.
Long tails, even just one more word added to a primary term, hardly moved at all. I'm a little surprised at the apparent lack-of-connection between deranking a page for "blue widgets" and keeping it the same, or even boosting it, for "blue widgets sales"