tedster - 2:25 am on Dec 24, 2011 (gmt 0)
There have been nine Panda updates that Google authenticated this year - and probably 400 to 600 other search changes, some very minor and others pretty significant. Seems to me like a lot of non-Panda work has been going toward changes in how link power is calculated. Other work goes into changes in how Suggestions work and their semantic engine altogether.
I'm looking forward to the first week of January when their Inside Search Blog summarizes the major changes for December like they did for the month of November [insidesearch.blogspot.com].