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.
Have you even read the article that OP posted? I wouldn't call it totally useless, most of the strategies are for sports betting and some are just explanations for odds calculations.
There are some really good tutorials on that website and they're not all pseudoscience. Sports betting and other +EV games are one of the few instances where it could actually pay to use a decent strategy.
I think it's not totally useless because it's definitely calculations that have basis in a way that could increase your chances in winning. It's all about bringing the right things to your mind and actions so you could profit. But in self, it's still gambling which has the same risk in itself.