ETFs started out as a good idea: convenient, affordable. And then the financial rocket...

|By:, SA News Editor

ETFs started out as a good idea: convenient, affordable. And then the financial rocket scientists came in to try to beef up the returns. Now the more ETFs become like mortgage-backed securities, the more likely we'll see "an avalanche of physical gold, live hogs and cocoa being heavily sold into often thin markets, causing sharp price declines."