"We allow you to link your coinbase account balances and are currently adding Coinbase trading support. If you want to trade your bitcoins today via BTX, you would have to transfer them to an account at one or more of the following exchanges: Bitstamp, BTC-E, Mt. Gox, BTCChina & CampBX."
Message received on 4th. Means, they're working on adding Coinbase trading capabilities.
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