jastra - 2:44 am on Sep 19, 2010 (gmt 0)

No, they don't.

All listings.asp pages that were indexed are now redirected to one current page.

Under the new site, the old functionality (all those categories) was given up. All those categories no longer exist, nor does anything on the new site approximate that old functionality.

So all the dynamic pages stemming from /listings.asp are redirected to one new page. It's also named listings.asp but it only links to a couple of new pages that are similar.

A couple of hundred dynamic pages went away.

I seem to remember Matt Cutts saying that when redirecting, one should redirect to the most similar page, or something to that effect.