synthese - 10:59 pm on Jan 3, 2012 (gmt 0)
Personally, I have deleted 30,000 pages and canonicalised plenty more. And, each time I consolidate, the remaining pages do better and better.
This is interesting. I also have been thru 9+ months of tweaking - and eventually deleting about 70% of the site. However I have not noticed any marked improvements in remaining pages. Keyword distribution is bizarrely flat (no stand out pages like there were pre-panda). This makes it very difficult to figure out what panda is hating.
Thanks for your insights.