I posted a comment and it got deleted: why?
Take a look at our comment policy. If your comment got deleted, chances are you were either spamming us (posting comments purely to link to your own site), or were engaging in some other form of unacceptable behaviour. It's absolutely fine to disagree with us, but if you call us names, attack us, or say something very offensive (either to us, our to our readers), yes, we will delete it. Our site, our rules.
Of course, we're only human and we do make mistakes, so if you think deleting your comment was one of them (i.e. you've read the comment policy and you're sure your comment didn't breach it), please feel free to get in touch and we'll investigate.