I think the card count on blackjack is not important because when we play online there is a system that makes the house and players have different levels of luck, after all many people use or play online gambling like this simultaneously and it is a sign that the calculation in the blackjack game not important. So, I personally just feel this game only relies on luck, if the cards can be known its movements then immediately play well, but when we feel something is not good at the time of the game, then I will just leave it.
Most, if not all, online blackjack games play like the deck is shuffled after every hand. Also, the live games online casinos offers use continuous shufflers. So no, card counting is not going to help much with online games. However, if you can find the right game in brick and mortar casino's, it appears that it can work. However, it appears that it did not work for me because I didn't have a big enough bankroll.
However, one thing that can help a person online is to learn the basic strategy. You would be surprised how many people do not know how to play the basic strategy, perfectly. I remember getting yelled out for making a play, such as split 9s against a dealer low card. One person, long ago, accused me of being greedy and how dare that I ruin a "good hand."
![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif)
I remember another guy yelled at me for hitting a soft 18 vs a dealer 10. the player, himself, was playing the no bust strategy. (Literally he would not hit a hard 12 or above no matter what the dealer had.)
![Roll Eyes](https://bitcointalk.org/Smileys/default/rolleyes.gif)