The US dollar has been the favorite currency of just about every bad guy you can think of pedophiles, terrorists, drug lords the world over. So that argument is not very good.
Very naive. When Drk becomes popular for criminals NSA and others will find a way to crack Drks anonymity.
Actually I like anonymous cryptos but I also have a bad feeling about them. Some people in the world can profit from Drk because they are politically persecuted or so and need to be anonymous. But to be honest, only very few people will use Drk for that reason. The majority will use it for illegal, criminal reasons. Drk has its value because it's going to be the next coin for SilkRoad and others. Do you really want that? I mean every currency is used for bad purposes but such a currency invites criminals to use it. I really like the idea but I think users will use it rather for bad purposes than good ones.