dataguy - 1:18 pm on Jul 22, 2011 (gmt 0)
dataguy, we don't how it will hold and changing locations etc has its own pitfalls--will the scraper seen as the original now for example?
That's why this should be tested and discussed. 301's work pretty reliably these days and from what I understand a proper 301 will retain the original discovery date. I've played with 301's since Panda first hit in February, but not with subdomains. I started experimenting with subdomains last Friday and some of the new URL's appeared in G's SERPs in less than 12 hours, which blew me away.
This siloing effect has resulted in many pages having traffic restored to pre-Panda levels, while at the same time, traffic to weaker pages has stayed the same or gone down slightly. At least I now know which pages are the weaker pages. I've spent years trying to figure out which pages Google liked and didn't like. With siloing each member on a subdomain, I can get a much better idea now.
I should reiterate that I don't think this is a 'trick' to restore rankings. I see this as the transformation of my site into a Blogspot or Wordpress type model where each member is isolated on their own subdomain. If you don't have a website where content from each member can be isolated, then that's something completely different than what I'm talking about.
The big question is what happens the next time the Panda data is updated. That's why I really want to be able to compare notes.