lucy24 - 12:31 am on Oct 24, 2012 (gmt 0)

hasn't linking from home page

Do you mean:
they don't link directly from the home page
or
you can't get there by following links that start from the home page?

Also:
do you want the pages to be indexed? If not, mark each one separately as "noindex".

You can also look at your logs. Do humans ever visit the pages? If so, look for referers other than google.