Bitfinex is a popular exchange because in terms of USD trading volume it has the most liquidity. It currently owns about a 10% share of the USD trading market. Because of its confusing interface, it's probably only a good choice for traders who really know what they are doing. Despite getting hacked and losing $70 million or more in customer funds, Bitfinex remains a popular option for serious traders. Still, the hack is scaring some people away. Verification One thing that has made BitfinexSee full review