I think blackjack game is a good method to earn some bitcoins,but play only for short time and don't bet more than can't afford to lose.
There are some skills involved in the blackjack game. You need to master those skills and with some luck to win. Most of us cannot win.
Luck is not really effected, your skill is can decide your winning or not, this is what i like in blackjack game, you need learn and got an experience until you can be a master of blackjack.
If you think blackjack is a 100% game of skill you are just simply not smart. Although Blackjack does have *some* skill it is mostly calculating your odds of what card to hit on, or what not to hit on. That simply being said doesn't mean the game is skill. It is about 5-10% skill 90-95% luck.