Active investing is the opposite of the passive investment / buy & hold strategy. Active means that you buy and sell stocks with the goal to create outperformance compared to a passive investment. For doing so, one uses so called tradesignals or indicators which shall tell you wether a stock is relativly high or low priced - buy and sell signals.
One type of these signals / tradsystems are the trend following systems and moving averages. This is what this website is about, if there exists an optimal moving average!