Plunging oil prices may be unambiguously good for those US consumers who have to gas up ever two weeks for their work commute (assuming they are not part of the 101.5 million working age Americans who don’t have a job), but they are unambiguously bad for those US corporations which have a direct top-line exposure to energy, or are located downstream in the energy vertical and are impacted by the profitability (and viability) of energy companies.