Agree netmeg ~ but that's true of any subject or public venue, be it letters to the editor or forums or people standing it line to stand on a soapbox.
I'd describe the cataclysmic aftermath of Panda as being a "reshuffling" rather than "wipe out", and for many, the reshuffling put big brands at the top, so my point if valid, though admittedly not universal (nothing is on web '11).
In Web 1995, it was easy to say to someone "you need better words in your keywords meta tag" (such a simpler time!). Then when people stuffed that with irrelevant nonsense, the emphasis shifted more to titles and meta descriptions; then titles, descriptions, first paragraph of text, and being in DMOZ; then with Google's arrival, titles, descriptions, first paragraph of text and number of quality links pointing to your site; then all of that and alt tags and image names and folder names and domain names and down to who else was on your server. With every upgrade, the complexity increased, and with Panda, we are into a level of complexity that (IMO) we will not grasp. That's how it's been designed, and to be honest, if anyone DOES figure it out, I couldn't blame them if they kept it quiet, because as soon as they say anything, the Google engineers will turn the knobs and that won't matter either.