I thought the article was excellently written, one of the best, with clear screenshots and explanations of what he's doing. (I do code though.)
others here have easily replicated his procedure to compare with alternative ones (e.g. just based on the word 'password'), and attacked his methodology (he should have compared with twitter searches unrelated to the military to show what he's claiming, the effectiveness of targeted twitter searches).
this is great. it means his methodology is easy to understand/follow, to verify, attack/question, modify, and reproduce. it's extremely clear what he's doing, and what he's saying. what more could you ask?