Above-average yields and reliable cash flows make these dividend-paying stocks an income-seeking investor's dream come true.If you're looking to pump up your passive income stream, there are a handful of high-yield dividend stocks that deserve your attention. AbbVie (ABBV 1.38%), Ares Capital (ARCC 0.44%), and Realty Income (O 0.92%) have what it takes to deliver heaps of dividend payments to your portfolio in the years ahead.Whether you're interested in a high yield up front, rapid payout growth, or a litt ...