I noticed that there are users here that it is impossible to disagree with. The second you start challenging them, or just present the other side of the story, you will get down-voted. It is not about subject. It is about the user to which you respond. I learned yesterday that if my response is not in alignment with a particular user to whom I respond, I will be down-voted in next 10 minutes. I have been here on the HN for some time and haven't noticed it before. Anyone else noticed that?