I think its great having a bot to show you the buy/sell signals automatically on the graph.
However Id never let it auto trade for me. I know btc is volatile, but not enough that it requires a bot to work while you sleep. Your really not going to miss out on that much action.
Ive let mine run for about 2 months, and i that time you can fine tune the ema settings until your happy.
Only after a descent amount of time and fine tuning would i even consider putting it on auto pilot.
So far i reckon noting beats the buy and hold strategy!