anchor.diff:          # Disable Activity Stream
           # https://wiki.mozilla.org/Firefox/Activity_Stream
           "browser.newtabpage.activity-stream.enabled" = false;
  +        "browser.newtabpage.activity-stream.telemetry" = false;
           # Disable new tab tile ads & preload
           # http://www.thewindowsclub.com/disable-remove-ad-tiles-from-firefox
           # http://forums.mozillazine.org/viewtopic.php?p=13876331#p13876331
  
positive.code:         # https://wiki.mozilla.org/Telemetry/Experiments
          # https://support.mozilla.org/en-US/questions/1197144
          # https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/telemetry/internals/preferences.html#id1
          "toolkit.telemetry.enabled" = false;
          "toolkit.telemetry.unified" = false;
          "toolkit.telemetry.archive.enabled" = false;
          "experiments.supported" = false;
          "experiments.enabled" = false;
          "experiments.manifest.uri" = "";
          # Disable health reports (basically more telemetry)
          # https://support.mozilla.org/en-US/kb/firefox-health-report-understand-your-browser-perf
          # https://gecko.readthedocs.org/en/latest/toolkit/components/telemetry/telemetry/preferences.html
          "datareporting.healthreport.uploadEnabled" = false;
          "datareporting.healthreport.service.enabled" = false;
          "datareporting.policy.dataSubmissionEnabled" = false;
        };
  
        # Use a stable profile name so we can target it in themes
  
negative.code:         # https://gecko.readthedocs.org/en/latest/browser/browser/DirectoryLinksProvider.html#browser-newtabpage-directory-source
          # https://gecko.readthedocs.org/en/latest/browser/browser/DirectoryLinksProvider.html#browser-newtabpage-directory-ping
          "browser.newtabpage.enhanced" = false;
          "browser.newtabpage.introShown" = true;
          "browser.newtab.preload" = false;
          "browser.newtabpage.directory.ping" = "";
          "browser.newtabpage.directory.source" = "data:text/plain,{}";
  