Reno - 9:51 pm on Nov 16, 2011 (gmt 0)
if we feel we were unfairly demoted in Panda
It's the rare person here (or anywhere else) who feels their demotion was "fair". If there is one thing these threads show, it's the almost universal unhappiness with the way Panda has unfolded. That is to say, quality sites too often downgraded, mediocre sites upgraded.
So whatever MC says, we must always remember that he is first & foremost representing what the PTB at Google want him to represent. He is not going off the reservation for anyone, either in public or in private.
In saying you should "let them know", there is an implication that a webmaster can do something about a rankings drop, which gives a glimmer of hope. In my review of threads here & elsewhere, there is nothing you can do (admittedly I may not have seen every single posting). To me, it's like being falsely accused of something and being told to write a letter to the editor ~ there is an almost 100% probability that nothing will come of it.
But you might feel better... at least for a few days.