But which English 20xx to use? The one that spells the phenomenon of our eyes rendering electromagnetic radiation as "colour" or the one that renders the same as "color"?
Grey or gray?
Is the building adjacent to the one across from you "kitty-corner", "katty-corner", "kitty-korner" or "katty-korner"?
Is the small freshwater crustacean a crayfish, crawfish, or crawdad?
Says who, mind you? Why would facebook adopt some FOSS English 20xx when it could implement it's own for advertising alignment purposes? What are the odds that google and facebook both land on identical implementations?