sftriman - 3:10 pm on Jan 13, 2012 (gmt 0)

I track my rankings for 500 keywords. In the time period leading up to the generous week, my cumulative score was tracking good: +1.5 to +8.0 every day for groups of 70 keywords. The last 3 days: my KW rank scores have been -26.5 and -28.0. I've seen KW in the top 10 fall right out of the top 100. Crapola. Note in my original set of data the /listing pages. Those in particular enjoyed a nice increase, followed by a slam to worse-than-before levels. My listing pages are long-tail keywords in my niche, e.g., /listing/ceramic-handle-pyrex-pot/ or /listing/extra-stiff-carbon-shaft-driver/. These are precisely the pages that got the ol' slap when Panda hit last year, and the pages I've been fighting with some success to save. Back to my original posting, I was just wondering if anyone else had the same thing happen to them in that time period. @tedster That's sure what it feels like, as if Google is testing out my site in some way.