In recent times a number of new and innovative ETFs have been introduced which allow trading in foreign currencies (forex), precious metals and emerging markets. ETFs in all categories have enjoyed a surge in popularity, and according to data cited in mid-December 2010, total ETF and ETF product sales amounted to over $1 trillion.

ETFs may be traded through retail brokerage firms with a schedule of competitively-priced commissions paid by the speculator. Major ETFs provide good liquidity, and therefore good price discovery - high trading volume means you can sell your position easily and take your money out with no hassle. High trading volume also mostly eliminates erratic price jumps and drops, thus minimizing downside impact when a large position is sold.