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Then, of course, there's the famous—or is it infamous?--Nosh, a mobile app. for tracking down restaurants. And, ahem, sending out elite ex-special forces operatives to track down missing Web pages. http://www.nosh.com/404 Oh, but guys, the page you gunned down? It's not a code 500, it's a code 410: the requested resource is no longer available at the server and no forwarding address is known. This condition is expected to be considered permanent.