Investing (speculating?) in oil has gone mainstream. The recent arrival of several exchange-traded products has opened up the commodity to the masses (iPath Goldman Sachs Crude Oil and U.S. Oil Fund.) There are also a growing number of ETFs and mutual funds that track broad commodity indices, which routinely have a significant portion of assets committed to oil. Beyond that, institutional investors in recent years have made strategic allocations to commodities in general and oil in particular. In sum, there’s a lot of new money pouring into oil.