Glad you like it. Regarding your questions:
1. Not possible yet, sorry
2. You can scroll up and down on the depth chart to zoom in and out
3. I don't understand what you mean. There is a menu called "Hotkeys" in the footer - just put your cursor over it to open it. Those are all the shortcut keys.
You're able to import your API keys from various exchanges to visualize your trades & orders in real-time. You can also pay for a trading account, which gives you access to a trading interface that works with the exchanges.
These features don't support Poloniex yet but they will soon. Currently...
Hello,
We have added Poloniex's DASH/BTC market to our real-time charting service:
https://cryptowat.ch/poloniex/dashbtc
We will soon be adding Cryptsy's DASH markets as well.
Enjoy! All feedback is welcome.