via Quant Stack Exchange - Volatility Skew
Why has the skew in gold prices been so protracted? It's because you merely take advantage of the skewness of the underlying. Pffft.
http://quant.stackexchange.com/questions/2079/skew-arbitrage-how-can-you-realize-the-skewness-of-the-underlying
via Investopedia.com - Vertical Skews And Horizontal Skews
Plenty of room for a forward skew in gold prices, ya think?
http://www.investopedia.com/university/optionvolatility/volatility6.asp
The low volatility in gold prices implies a large price move - obviously!
http://schrts.co/PTm5d0
-F6