Maybe we could ask them to take pictures of there mining rigs with bitcoin-trader.biz sign in front of them. this would really help with some concerns. as if this is true the trading part should go hand in hand.

If it was a scam all together they would not have any mining rigs i believe and would just rob peter to pay paul.

another thing i notice is that they do having losing days. https://bitcoin-trader.biz/results.php

if you look at btc arbs they never loose money looking at the past 2-3 months