ETF instead of Futures Contracts

Several people have emailed me regarding alternatives to future contracts. The issue is that some people do not feel comfortable with the high-leverage, rolling over futures contracts, etc. Please note that all these techniques (i.e. COT proxy, etc) can be used with ETFs. Below are some important ETFs to know:

- SPY : S&P 500 Index
- DIA : Dow Jones Industrial Average
- QQQQ : NASDAQ Index
- IWM : Russel 2000 Index
- IEV : S&P Europe 350 Index
- EWJ : MSCI Japan Index
- DBA : Agriculture Commodity Index (Corn, Soybeans, Wheat, Sugar)
- US0: Oil
- UGA: Gasoline
- GLD: Gold
- DBB : Aluminum, zinc, copper
- GSC: 24 commodities including energy, agriculture, and precious metals
- UUP : Dollar Bullish
- UDN : Dollar Bearish