Hi Khonwan, welcome to the forums. I can't help noticing a recent rise in atheists joining the forums! I guess it has something to do with the recent events on the news? I think it's good that people are at least making an effort to see for themselves what's going on..
In another forum (nonreligious) I frequent there's this dude who would explain misconceptions about Islam whenever someone opens up a bash thread. I was quite impressed with it and he would even cite proper muslim sites as sources. Some people actually started accusing him of being muslim, but he is actually atheist.
I personally see it as a great reminder to myself that one doesn't necessarily have to belong to a religion to defend against slanders against it, it's just part of a certain responsibility to morals and intellect. Well anyway sorry for rambling, I hope you will have a beneficial time here!