Xkeyscorerules100.txt
I don't have a good reason to believe that this is real, but if it is the most surprising part to me is the "mapreduce" rule definition in there.  As far as I know the only group with a C++ mapreduce implementation called "mapreduce" that also uses protocol buffers (the "proto:" block is protocol buffers) is Google.  This seems to say to me that the NSA is using a Google implementation of map reduce.  That can't possibly be right, can it?