As did Ed Thorp, who did the early research on Blackjack, and broke the system to the public in the 1960's with "Beat the Dealer". After he became too well known, he applied similar analtyic techniques to Warrants in the public securities market, and later in adapting optimum strategies for Hedge Funds also in the securities area.

Bob Dancer did something similar with his books, reference cards, and PC programs for Video Poker players a few years ago after his comps were cut-off by most Las Vegas casinos. Interestingly, the casinos arrange for him to teach his methods ON THEIR PROPERTY, in a number of cases. They know that many more people who want to be A.P.'s will try and lose money, than will be able to find the time, and have the ability to learn and play correctly.

I see nothing particularly wrong with knowledgable people selling their knowledge to the casinos as well as prospective players. It's part of the free market idea. Conversely, you as a player can read books by casino insiders who describe casino protection... read "ADVANTAGE PLAY FOR THE CASINO EXECUTIVE by" Bill Zender who was the casino manager at Aladdin for a number of years. Only $35 at Gamblers Book Shop.