Mann also noted that ETF market makers are participating in equity markets freshly rebuilt on volume-based incentives, not exactly the kind of bait that would attract long-term holders in passive index investments.

FORBES: The Lawless Society of ETFs

Of course an easy way to invest in any kind of Japanese stock market recovery is by purchasing share of iShares MSCI Japan Index fund ( EWJ), which is down about 1% so far this year.

FORBES: Jeremy Grantham Warns 2013 Will Be A Dangerous Year For Stocks