Facebook IPO at 5 years and $1 trillion worth of lost productivity
But Facebook wasn't always the tech powerhouse it is now. Five years ago, many analysts thought the company was overvalued, overhyped and simply not worth the price. At the time, hedge fund manager Dennis Gartman passed on the investment "The world does not revolve around Facebook," he wrote in his daily "Gartman Letter" at the time. "Never has and...