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Forum Moderators: phranque
[edited by: phranque at 8:21 pm (utc) on Jul 10, 2013]
[edit reason] exemplified domain [/edit]
Q: would these be viewed as duplicate content?Yes, if two URLs display the same page content, then this is viewed as duplicate content.
Q: would removing them using the Remove URL tool kill the site entirely?If you specify the exact URL to be removed, then only this URL is removed (unless the specified URL is a folder, and you click on "Remove directory"). If you go this route, then the URL to be removed must either return 404/410 or be blocked by robots.txt. However, I would also read this before you proceed with URL removal: [support.google.com...]
I am wondering if they are left overs from their prior site and just sitting in the Google database.Yes, possible. It is also possible that Google is "adding" query string to see if this will uncover "new pages". I've seen this on one of my client's site where Google has added query string often found in Wordpress URLs (but the client site was not in Wordpress)
However, why are they resolving to the home page?Many websites with dynamic page generation have the same problem. For example, if you try this (replace www.example.com with your client's domain name):