When the secondary market for renewable identification numbers, the designation given to ethanol credits, took off earlier this year, it crushed refining stocks. Many wondered if the soaring ethanol credits would hurt consumers at the gas pump. Almost no one wondered who was on the other side of the soaring costs, benefiting as their credits jumped in value, if only for a short time. In this video, Fool.com contributor Aimee Duffy takes a look at how Kinder Morgan (KMI 1.71%) profits from the RINsanity.