For your information I accepted to be an escrow for NTX.
A trade of 0.5 BTC has been done already between peled1986 and duola9527.
Yes I can do it.
The deal is like this :
People contact me.
I create a NTX address to receive the NTX.
One send NTX, the other send BTC.
I take fee of 0.02BTC or 0.9% which ever is greater from the BTC.
I send the BTC to one and I give the NTX password to the other.