Trang Ho of Yahoo Finance has written an article (Dec 14, 2009) :
"Consumer spending makes up 70% of the U.S. economy. So studying people and where they are in their lives can provide a crystal ball for what's going to happen in the economy years ahead of time, according to HS Dent, a financial research firm founded by economist Harry Dent.
Rodney Johnson, president of HS Dent, applies the theory behind the Dent Method to actively manage Dent Tactical ETF's (NYSEArca:DENT - News) portfolio of other ETFs.
Since it started trading Sept. 16, the fledgling ETF has lost 4% while the S&P 500 has gained 4%. An older portfolio following the same strategy but offered through variable annuities shows more promise: It's down 5% since May 1, 2008, vs. the S&P 500's 21% fall."
(click here for more details)