Planet13 - 11:46 pm on Dec 16, 2012 (gmt 0)
Thanks for the note.
"I tried moving one site to another domain that was decimated by the April 24th update and it had no effect."
I think my situation MIGHT be a bit different from yours - maybe you can let me know if not though.
My page still seemed to rank for long-tail variations on "blue widgets", and the home page replaced the blue-widgets.html page in the serps for the term "blue widgets"
In fact, there is another page on my site that ranks #1 in organics for "blue widgets construction materials"
so I would say it is not so much of a site-wide panda / penguin issue... more just like an individual page issue.