From the earliest days of The Motley Fool, our mission has been to "Educate, Amuse & Enrich." Today we double-down on the "Educate" with an exploration of some commonly used financial terms. Guest analysts Andrew Fredrickson, Abi Malin, Aaron Bush, and Jim Mueller join David to define and discuss net profit margin, cash flow vs. net income, dividend yield, burn rate, and spiffy-pop!