Well, one of the biggest relations I found within the tablets is The Nine. There are 7 beings that form The Nine that are each at a different levels of conciousness. The Nine are titled THREE, FOUR, FIVE, and SIX, SEVEN, EIGHT, NINE. The reason one and two are left out is because they are still bound by the darkness and only take physical forms. The Queen of the Reef speaks of this order of Nine during the Gatelord missions on Mars and Xur is the agent of the Nine. The codes you enter on the site are all 9 digits and 7 is Bungie's magic number. The codes may have nothing to do with it, but they were hidden in most of the limited edition material.