Very interesting read regarding the 500 binary bet with odd 2 and trying Martingale, fixed or proportional betting. Unfortunately I have tried all these methods before and I can tell that this article is not correct, it is never possible to have a 87% chance of winning after 500 bets with this strategy. I think you should remove this article from your website, so far no betting strategy is proven to be perfect or to have more than 66% chance which only remains a double chance bet.
This article is good to provide you with a general idea about betting and how to manage your bankroll but it cannot have a 87% chance of winning.
Betting strategies are useless, you are just trying to decide how much money you are giving to the casino, the best strategy is the more simple bet the same amount in each bet, the only problem is that gamblers are looking for fun and for a way to beat the casino and flat betting implies you are accepting you are never going to beat the casino.
I beg to disagree, all strategies have usefulness of their own. The reason why this strategies never become effective is that the one who is using it does not know when to quit. Gambler who does not know how to use this strategy effectively will never have a good result. It is like using a plier to cut a wood, and or using a saw to drive a nail to the wall. Strategy needs an appropriate approach, control and moderation. If you disregard this stuff, you will never benefits from them.
Anyways, I onlyknow martingale method.. but I can say I had taken a good winnings from this method combined with some strategy.