I often watch poker videos on YouTube where the player have very good acting to hiding his cards through his flat face. I have seen them being able to win with very bad cards on their hand with a good bluff, all in his chips. So I imagine, and often play poker online, I am very happy if I get a good card and I can't hide it well so just go all in all my chips. So what do you think?, how do other players know when I have good cards when playing online?, Is by check and don't call the bet they know we don't have a good card?, I'm not good at hiding it, sometime when I have double AS, I always all in at the beginning.