lucy24 - 6:24 am on Jun 10, 2013 (gmt 0)
What if I 301 redirected all of these directories to the homepage
There may exist situations where a mass redirect of all requests to the home page is the best solution. I can't remember ever personally hearing of one.
The people at the other end of those links aren't linking to your home page, or to your site generically. They are-- or were --linking to a specific page.