Right, but do you agree with the idea of considering not only the current value of ema-diff, but its trend, too?
Interesting idea, but all EMA bots at the moment are based on the Goomboo's Journal. Goomboo, as a trader, suggested that the more simple rules such a trading system has, the more profit it will generate in the long run.
Well, I don't think "the 99 bucks bot guy" has based his work on any scientific knowledge really
He will probably implement any crazy idea as long as someone pays him to do so and it looks good in the feature list of his bot. But the only strategy he is pursuing is probably the one that makes himself earn a buck 