why on earth does

a stock like ADO follow a tech indicator like a MACD so specifically?

It has worked for a couple of years now and the last 2 signals were buy on 31/1/13 @ 6.3c with a high up to 7.1c and a sell signal @ 6.6c on 27/2/13 for the recent move to a low of 4.7c and now looking like it is about to cross for a buy again.

Shortest timeframe it has either rallied or sold off for is just over a month so when it crosses back over it will likely trend up for a number of weeks.

The best combined signal is probably a close above 5.2c where it goes back above the recent low in Sept last year signalling the recent lows were a false break down.

Even at the speculative end of town technicals seem to have some relevance.