Zaif is a Japanese exchange, it's know to be of the newest and its performance was also very good based on customers feedback. It was mostly patronized by Japanese although it has traders from other regions but not to many, the only issue non Japanese traders had was that they couldn't trade fiat since Zaif supports only Japanese yen. It was quite unfortunate the exchange encountered a fatal loss of $60 million as a result of the security breach where hackers made away with a huge number of digital currency that left the exchange and users in total dismay. The exchange hasn't be as active as it use to before cause most people lacked trust in the exchange's security.