this cardcounting in bj is always discuss all the time . cant find them all but i manage to find some
https://bitcointalk.org/index.php?topic=5171747.0 ( does card counting really work in black jack )
https://bitcointalk.org/index.php?topic=5273810.0 (card counting in blackjack )
I think iit works better in online casinos because there is nothing the house can do.
It's easier for them to ban you online than in a physical casino.
why will they ban you when they cant see you ? why cant they just consider that it was a normal win . banning players because they win or they can win often is verry unprofessional .