they know that you've changed your habits. they know you're on tumblr now. they're still watching you. in fact, they're watching you so closely and effectively that they're watching you change your habits as you try to avoid being watched. well that is precisely what these theoretical hapless terrorists would have learned from reporting this week by veteran cnn pentagon reporter, barbara starr. >> now u.s. officials say other terrorist groups are reacting to these disclosures by snowden and very quickly also changing their communications methods. >> the article accompanying that report cites unnamed anonymous intelligence and administration officials, speaking in very specific terms about the ways in which the american intelligence community is able to observe terrorist groups as they change their communication patterns. the kind of information that i would hazard to guess is almost certainly classified. one of these unnamed sources, in fact, goes so far as to offer an example of exactly the kind of thing the terrorists are doing