I saw a story somewhere between 2007 and 2008, where the the state of the logisitic business ( FedEx , UPS, DHL, etc) predicted the immediate slowdown of the global economy because of the declining quantity of freight shipments during the previous year or the previous three consecutive quarters for that year.
- Google Trends This index monitoring the day to day flow of the information economy
- WorldoMeter (Real-time Global statistics)
- Standard and Poor 500 (S and P 500) Index
- The Economist Magazine's Crony Capitalism Index
- The Supply Chain Index
- U.S. Postal Service