It leaves a clean chart without too many distractions so you can concentrate on price action.
A useful indicator for trading next candle/s in direction of trend off or harami. Use Shiva Krishnan's EMA6 method for additonal confirmation.
Publishing at 15M but works well on shorter time-frames.
Please do not just follow the dojis and haramis - general price action needs to be taken into consideration, of course. And please test your own strategy.