I added it to all the sites at my old workplace when I was there after a discussion on HN.
One day I noticed that it disappeared, but then it returned, so someone on the inside cared and brought it back, that made me smile :)
My cynical mind would assume someone was trying to debug an unrelated issue and saw this header in a last known good version.
My cynical mind would assume someone was trying to debug an unrelated issue and saw this header in a last known good version.