ETFs that pay monthly dividends and utilize a strategy of selling covered calls to generate income have grown in popularity in recent years. While this strategy is receiving an influx of attention, it isn’t necessarily new. In fact, an ETF called the Global X NASDAQ 100 Covered Call ETF (NASDAQ:QYLD), launched in 2013, currently boasts an eye-catching yield of 12%. While the ETF holds appeal for income investors, there are also several things that investors should be aware of before jumping in r