There is a lot more to ETFs than meets the eye - USATODAY.com

There is a lot more to ETFs than meets the eye - USATODAY.com: "For every dollar in an ETF, U.S. investors have $12 in mutual funds.Still, at nearly $900 billion, ETFs are growing faster than funds, their assets doubling over the past four years.....On a typical day, ETFs make up about one-third of the trading volume on U.S. stock exchanges. Mostly, it's market pros such as managers of mutual