Whitey - 1:18 am on Aug 15, 2011 (gmt 0)
I'd be very wary about noindexing a lot of pages as an approach to site improvement.
It's a hard one turning around an existing site, especially if it's a large site. And noindexing alone hasn't worked in isolation from what I've seen.
Also the quantity of content, seems to be all over the place - so size is not always that important.
What about adding dynamic features to the content so that it doesn't get stale?