Back in the day there was talk about "jamming echelon" by adding keywords to email that the echelon system was supposedly looking for. We can do the same thing for XKeyScore: jam the system with more information than it can handle. (I enumerate the bugs I find in the code as "xks-00xx").
more here.........http://blog.erratasec.com/2014/07/jamming-xkeyscore_4.html#.U7ZrIvldWSo
more here.........http://blog.erratasec.com/2014/07/jamming-xkeyscore_4.html#.U7ZrIvldWSo