I need someone to explain to me how the "main" and "supplemental" Google index works. Is there a way to tell if a page is in the main part of Google's index (I don't just mean with the site: command)? What about the supplemental index? I read some posts from 2007 where there were specific queries that you could type in and get the pages that were in the supplemental index, however, those do not seem to come back with the right data anymore. Any help would be appreciated.