I don't understand how the agents found the urls originally? Did they have some sort of shared context/memory? If they did, why bother with the wiki edits at all? If they didn't, how did they discover the wikis?
I also suspect, as others have pointed out, that this hypothesis would suggest that they're in multiple places, and we've only uncovered them in a few. So you're asking "I don't understand how the agents found the urls originally?" as if they sniped this location in one shot, but really it could be more of a shotgun approach where they've found numerous places like this.