It's worth mentioning, that in many areas wherein there are not many Tor users, the mere use of Tor can flag authorities as to who might be 'up to something'.

It's worth mentioning, that in many areas wherein there are not many Tor users, the mere use of Tor can flag authorities as to who might be 'up to something'. The guy who bombed the boston marathon I believe was caught in this manner: they knew someone in the building was doing something nefarious, and they looked to see who downloaded Tor. Bingo. Or something like that. I'm not against Bitcoin and understand it's principles - that said - it's the most obvious use case is perhaps for situations in which people want to get around the law. It wouldn't surprise me at all if anyone using bitcoin is flagged somewhere in an NSA database.