synthese - 10:01 pm on Nov 21, 2011 (gmt 0)
@Whitey - I can only speak for myself. In the first 6 weeks post-Panda 1 in Feb, we threw everything at it. Immediately removing about 10-15% of content (thin). Addressing technical issues (noindex on user profile pages, tag pages, and canonical where appropriate). And going after scrapers.
There was no recovery so we had to leave it alone as it became uneconomic.
However in the last 3 weeks I've got back fulltime at the site -- doing an even more drastic prune of older content, and attempting to improve quality on remaining work.
It is very difficult work to do on a larger site (thousands of pages).