Investing in REITs is all about the dividend yield. Passive income investors love real estate investment trusts (REITs) because their dividends are often high- yielding and reliable. REITs are required to pay 90% of their income as dividends, which can lead to some high payments. Realty Income (O -0.25%) is one of the best. It's a retail REIT and leases its properties to some of the most stable essentials retailers, so it reliably gets its rent and pays its dividend. It has the rare feature of paying a mont ...