SEOPTI - 5:07 am on Aug 11, 2011 (gmt 0)
I don't know if more sites will follow but try at least to track your events with a statistics package so you will know the exact metrics of your site, which links your visitors click and so on.
As soon as you run this tracking for 1-2 weeks try to improve these numbers, it won't hurt.
Since I did both, adding great (expensive) content and improving user metrics at the same time I can't isolate a single factor so doing both at the same time is probably the key. The sites have been punished at a Panda date and have been released on a non-panda date, therefore I'm sure it is a Panda release.
I don't care what Google says since I use Bing+Yahoo (my favorite search engines) for my converting traffic so I don't need Google at all at the moment but of course 10k additional visitors daily are nice.
Bingdude has been more than helpful, Thanks a lot! He also exactly answered questions about bounce rate which might help you with goog.
You will never see this clear language from goog. 5 stars for Bingdude!