Question: "where did you get that coin?"Especially when Null stresses heavily on how you shouldn't reveal personal details on the site. Now, you won't necessarily reveal yourself as a Kiwi Farmer in buying the KiwiKoin, but having a giant fucking hunk of "silver" with the profile a fat tomgirl on and the name of the site is going to be a big clue on your web-browsing habits.
Answer: "I traded someone for it online."
Nobody has to know unless you tell them.