This image is displaying Flash Initiation Density and Flash Extent Density in addition to the typical 5 minute lightning plot.  What stands out here is that larger areas of the storms are more electrified than viewed by just the 5 minute lightning plot.  This helps the forecaster determine better what the arrival times to use when they are considering TS or VCTS for amendments to TAFs or may help in giving a better ETA of lightning for large events such county fairs for emergency managers or spot fires other IDSS customers.