tedster - 9:36 pm on Jun 28, 2012 (gmt 0)
Nofollow won't exclude a page - noindex will however, I assume that's what you mean.
First thing is, internal duplicate content does not usually mean a penalty. It does mean however that the "wrong page" might end up in the SERPs. My question is what good this listings page does your visitors. It doesn't sound all that attractive or useful to me.