What is a non market user?

[ArtemSoul]

See these every now and then.

Also what does it take to get a TWC put onto your account?

 

[Pain]

Understanding the DNT (Do Not Trade) rank

TWC is given to those who actual suspicious or do something sketchy during a trade or have that sort of behavior.

You report them here:
Report A Scammer

To request a twc.

Follow the stickys.