Power your passive income stream with dividend stocks that yield over 3%.When the broader stock market rises faster than companies can increase their payouts, the dividend yield of the major indexes will fall. That is exactly what has happened with the S&P 500 -- which yields just 1.2%.However, there are plenty of dividend stocks to buy that provide far more passive income than the S&P 500. Here's why these Fool.com contributors believe that PepsiCo (PEP 0.63%), ConocoPhillips (COP -2.93%), and Watsco (WSO ...