Want to hear a staggering number? Here it is: 208,300%. That's roughly the gain that Amazon (AMZN -1.33%) has delivered since its initial public offering (IPO) on May 15, 1997. If you had invested $10,000 in the stock back then and held on for the wild ride, you'd have a whopping$20.8 million today. Amazon won't be able to generate the kind of sizzling growth in the future as it did when the company was still a rising star. However, that doesn't mean this stock can't still make investors a lot of money. I ...