Here’s a handy trick with Google: “inurl” searches. You can search for a text string in just the URLs of Google’s index.
For instance, I wanted to know what content management system a certain site used. All of the site’s URLs had the same patten (“/cgi-bin/b7/…”). This search in Google…
…produced a list of pages with this same URL pattern. From there, it wasn’t hard to find one that referenced their platform: Bazaar.