Like I said, falling oil prices could mean a slowdown/coming recession in our economy. Our economy runs on oil, if firms have decided to start cutting down on shipments/airfare etc.. oil would come down in price, which it has. Again, nobody can possibly know for sure why oil is coming down right now. If you study trends in the economy, you would see sudden drops in oil prices preceeding our 3 or 4 most recent recessions. Alot of economists would support this theory right now. If you want to see some more pretty ominous evidence to support a coming recession, study this yield curve of 10 year and 3 month Treasury Bonds.(click for bigger image)
See those gray vertical bars? Those show past recessions in our economy. Notice that they ALL come very soon after the yield dips below zero. Though this curve is not exactly to date, I can tell you right now we are under the zero mark.