Six or seven years ago, the stock market was booming, Internet companies that no one had ever heard of were valued at billions of dollars, and anyone and everyone was investing their money in tech stocks. Then, in 2000, the stock market crashed, the Internet companies closed their doors, investors lost trillions of dollars, and life went back to normal, more or less. Five years later, tech stocks are nowhere near their 2000 peaks, but investors are salivating again. This time, they