As a blackjack player, I wanted to ask what is the best wagering system that I can use while playing blackjack at an online casino that gives players a small edge? What is the betting strategy that will maximise my wins while minimising my losses over the long haul?
Sorry, I just realised you didn't mean 'a casino that gives players a small edge', but 'a betting system that gives players a small edge'.
The first sentence of my previous answer stands, though.
Be careful with systems, they rarely actually pay off and if they do it might be down to shear luck. Blackjack gives the player the best chance but the house will always have the edge.