On black box systems,
I have heard of one system that is in use on futures markets and makes consistent profits (of course, any workable system would be used to trade derivatives and not equities, Flash there's your first clue). The development of the system is outlined in "The Predictors" by Thomas A Bass, worth a read if anyone is interested.
Of course, it cost millions to develop, was designed by a team of professors and specialists and there is no way such a system would be offered to the general public.