First exchange! https://trade.cryptobroker.io/markets/btzbtc Let us know about this exchange. All opinions are valued now as it looks like new exchange. Join to community and send here your opinion!
No Slack yet. Anyone with good moderation skills can setup Slack / Discrod / IRC. Just post here details.
For the sake of interest, I sold a few coins and tried to draw a conclusion. But the whole day is hanging in the status sent and the button to cancel the output. Approximately the same thing happened with cryptsy and cryptodao.