Robert_Charlton - 9:40 am on Jun 10, 2010 (gmt 0)
noindex,nofollow and noindex,follow behave very differently.
Note that noindex,follow pages can accumulate and transmit PageRank. This has been confirmed by Google.
Funny coincidence... I just posted in the Updates thread about unique content that I insisted to several of my clients that they "contractually specify to resellers that their web copy had to be different"... and I had the clients go so far as to create a different set of content for the resellers.
I agree with tedster that you should be very cautious... downright reluctant, in fact... to remove an entire directory of good material.