given how easy it is for law enforcement to tap into our internet activities, I suspect bitcoin use is the perfect red flag for them; it is a different kind of bitcoin mining. it is kind of a joke actually; there is some dude trying to secretly buy something that he doesn't want the cops to know about but his use of technology to hide his transactions is the signal that alerts the police to take a closer look. even if he is just buying drugs, his use of bitcoin justifies increases to the law enforcement surveillance and budgets. and the funny part is that we are paying for it. bitcoin makes all of us more vulnerable to surveillance. If you are into bitcoin because you've found a way to get more out than you put in, then by all means continue to do so. If you're into it because you don't want to be tracked then you're lying to yourself.