If you're looking for high-yield dividend stocks, I've got some good news. A couple of mortgage REITs offer eye-popping yields, and there's a chance they'll be able to maintain their payouts.Shares of AGNC Investment (AGNC 2.37%) and Annaly Capital (NLY 2.53%) offer an average yield of 13.2% at recent prices. That means an investment of just $7,580 is enough to set you up with$1,000 in annual dividend income.Before whipping out a brokerage application to buy these stocks, you should know that they are real ...