message: Add Postini.
diff: "description": "Google Health was a personal health information centralization service that provided users a merged health record from multiple sources.",
  "link": "https://en.wikipedia.org/wiki/Google_Health",
  "name": "Google Health"
  + },
  + {
  + "dateClose": "1999-07-01",
  + "dateOpen": "2012-08-21",
  + "description": "Postini was an e-mail, Web security, and archiving service that filtered e-mail spam and malware (before it was delivered to a client's mail server), e-mail archiving.",
  + "link": "https://en.wikipedia.org/wiki/Postini",
  + "name": "Postini"
  }
  ]
  