With the plethora of financial gurus on CNBC and Bloomberg TV being asked about their opinions on stocks and the economy, I wonder if there's any value in following these gurus' advice? One convenient way to follow the gurus is via the Global X Guru Index ETF (NYSEARCA:GURU), which tracks the top holdings of dozens of hedge funds. Unfortunately, my analysis of the GURU ETF shows it has performed poorly against a passive market index fund because the fundamental strategy is flawed.