For the past 7 years (2005-2011), I have exclusively used my "Stock Trading Riches" system to manage my portfolio.
While I lagged the market in 2011 (-5% vs. +2.11%), I have beaten the S&P 500 over those 7 years:
Year, Me, S&P 500
2005, +13%, +4.91%
2006, +14%, +15.79%
2007, +22%, +5.49%
2008, -40%, -38.49%
2009, +44%, +23.5%
2010, +22%, +13%
2011, -5%, 2.11%
My portfolio has had a cumulative seven-year return of +57.38% vs. +12.32% for the S&P500.