Another quick question for others in this situation. I'm investigating some of our analytics from our site in the days prior to panda updates. Often there is a traffic bump that happens and then when the update really kicks in, then traffic goes back to normal / worse. There's been some speculation that Google sends a flood to test a few of their metrics (bounce / time on site)
So I thought I'd look at those bumps and see which areas of the site are specifically being "tested" by Google on those days. In particular it does seem that our forums come off badly in the metrics. Time on site only at about 1 min for traffic landing there (compared to other areas where it's more like 5 minutes). And pages/visit also well below site average.
What kind of time on site do you all see specifically for traffic coming in from Google?
This line of thinking does give some credibility to the idea that culling those pages with high bounce rates from the index can help overall rankings. Don't want to be dragging down the average after all.