The patterns identified by these screens are just a few of the many existing Japanese Candlestick patterns. One of the best uses of candlesticks is to identify reversals and that's what each of these scans does. As is often the case with technical analysis, your results can be improved by finding setups which have multiple signals aligned (a confluence of indicators). For example, a Hammer plus a bounce off (or near) a major moving average. Another example would be a shooting star combined with a Stochastic Sell Signal.