Through trade windows with AI, I can profit off them for no benefit on their part. This can only work if both parties have a sufficient amount of gildar.
Example: I'll buy all your metal for 2,000 gildar. "Deal!" Say...I noticed you have no metals, pretty important stuff... How bout I trade you all your metal back for say... 6,000? "Deal!" Hold on let me add a little bit of my own metals so I can take all 8000 of your gildar. "Deal!"
Like stealing candy from a baby...