Do not trade with random people you meet on the servers, because this can often lead to commercial fraud. By clicking on the user's avatar image being negotiated with the willingness to take his / her profile. Make sure this is not a person who changes his name and avatar to impersonate another person. Do not perform a trade in which you are only sending items and not receiving any items in return. Make sure the items are the real thing, placing the mouse over them and read the description.
The stuff have been sold and i got the items/gold, i would never do something that could get me scammed.