The DS9 Thin Ranks set was missing Ambassador ranks. Both the split and integrated sets have been updated to include them. There is also a patch available for the integrated set if you do not want to go through the download and wait process. The split set is still less than 1mb, thus not really worth making a patch for.
I wanted something that could be used as a random item, yet was still possible to access the information. I originally came up with the idea for an 80's RPG website I was working on for a site. The anti-spam question was an inventory item found in the game.