Garett Rogers found in Google's robots.txt file, "Disallow: /base/s2" and then gave the URL a try and found a potential Google Base version 2.0. When I tried example searches at the /s2 directory, they were being redirected to the main Google Base, such as ice cream maker search, which now redirects to the main Google base. Both Garett and Philipp Lenssen have screen captures of what it looks like.
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