What does counting cards mean?

Question

and is it illegal or considered cheating and why? :)

Answer 1

Card counters keep track of the cards that are dealt in the game of blackjack, they then have a very accurate representation of what kinds of cards are left undealt.  By placing bets at key times and playing their hands perfectly according to an ADVANCED playing strategy, they can beat the house with return rates on bets from 100.6-102% or more.

This means that everytime they lay 100 dollars on the felt, one average they will win their 100 back plus 60 cents to 2 dollars or more, it doesnt sound liek much but when you consider that they could be getting as many as 200 hands per hour, and play two spots at the same time all while betting far more than 100 dollars, you start to reallise why casinos dont like them playing very much.

Answer 2

it means you can beat the game you are playing when most people think its luck but it is very much beatable

Answer 3

yes its illegal

Answer 4

Counting cards means the player can try to beat the system and place higher bets to try to win more money.  

They remember all the cards that has been dealt and at the end of the pack they guess the probability of winning with the remaining cards.