You can't simply buy "Oil". So if you buy an oil contract I'll expect, on the long run, to pay fees for storage at least.
http://thedailywtf.com/articles/Special-Delivery don't know if it's true and not that bothered as it's still fairly hilarious.
I think there would be legs in a Silicon Valley/IT crowd style show about market traders.
You can't simply buy "Oil". So if you buy an oil contract I'll expect, on the long run, to pay fees for storage at least.