This article originally appeared on ETFdb.com. Futures-based investing has long been a popular option for those looking to gain exposure to commodities that were otherwise difficult to reach. But with the introduction of ETFs came increased granularity in this investing segment, as there are now exchange traded products that offer exposure to a wide variety of commodities through a single ticker. This alleviates the stress and complexities that are involved with managing a futures account, while allowing investors to sometimes gain access to multiple commodity futures with just one fund. Still, for everything that ETFs have opened up for the everyday investor, these funds are by no means perfect.