Hissingsid - 1:37 pm on Oct 5, 2011 (gmt 0)
All I can think is that perhaps there is a different sort of Pandalisation I haven't previously considered, that a site is hit by Panda in a sense, but it removes a section of traffic but replaces it with a different sort of traffic, so the overall level remains nearly constant.
Sounds a bit like the way Adwords finds new terms that it decides it will show your site for. Bounce rate is high for those new terms and you have to manually change them to negatives otherwise you get crap traffic.
I'm seeing something similar on WMT where new long tail terms appear in my report but they almost invariably have a very high bounce rate.
It looks like my site has taken a hit on the high traffic terms that it is perfect for and a boost on hundreds of low traffic terms for which it is not very helpful to visitors.
It looks like Google's suggestions have changed in some way and are encouraging people to be more specific in the term they select but then another change in the results they get means they find sites that don't satisfy what they are looking for.
Remember the Google CEO saying they plan to offer up the one perfect answer. Could this be what they are aiming for but wildly missing the mark?