The website explains why everyone doesn't do this:
"Because like counting cards it's frowned upon by the casinos as it leaves them severely disadvantaged. BUT here is the best part, unlike counting cards this strategy can be applied at the online casinos."
Of course it shows bet $1, bet $2, bet $3 bet $4
... wonder if they consider bet $25 bet $50 bet $100 bet $200 ...
Oh Brother