The cigarette giant is a must-know stock for income investors.Altria Group (MO -0.48%) is an income investor's dream come true. The stock pays a quarterly dividend of $1.02, which works out to an annual dividend of $4.08 per share. As of this writing, the stock's yield (dividend payment divided by stock price) is 8.2%. That could make it an excellent choice for anyone focused on generating income from their stock portfolio.Overall, the company is expected to pay out roughly $7 billion worth of dividends thi ...