aristotle - 1:21 am on Nov 10, 2012 (gmt 0)
Yes I know they are indexed, probably because of external links that other people pointed at them. But that doesn't matter because they still haven't been crawled, and so the google algorithm doesn't know their content. That's my basic goal -- to prevent the Google algorithm from knowing their content, so at this point I've achieved my purpose.
If in the future, they do get crawled, then the noindex tag will be found. So in that case, the google algorithm will learn their content, but hopefully the noindex tag will prevent a duplication penalty. (Parts of these pages contain the same content as parts of other pages on the site). So that's the reason for the noindex tag.