Is this just an advertisement for the referenced site?
What's the chart? It must be more than MA crossovers (it ignores some of the crossovers) so I presume there's some rule or logic behind the "assertions" of buy/sell.
User: Tim Knight: Prediction Fails: 20120725_sell.png
Its a 50 200 MA and doctored. No signal since Jan and not close to giving one now.
Another predictive flop.
Not helpful, should be culled out of stack
The author says only 9 out of 51 sell signals worked - agreeing with this as a useless indicator