I suspect they plunder the cities of the Elderlings of their treasures, and claim that ancient magic as their own. Bingtown and the Bingtown Traders act as a shield to conceal a people unknown to the rest of the world. Those people delve deep into secrets they cannot grasp. They dismantle the hard-won knowledge of another folk and time, and market it as amusing trinkets. I suspect they destroy as much as they pilfer.
