Google will likely drop a Web page from the index, which will cause the site to lose all traffic and authority already built, if you forget about old pages that already exist and don't use a 301 to redirect them. James Parsons serves up several solutions to help identify the URLs turning up 404 error messages to potential site visitors and search engines. Read the article here.
Laurie Sullivan is a writer and editor for MediaPost. You can reach Laurie at firstname.lastname@example.org.