Whether you’re writing a comment, or you’re writing a blog post, etiquette is hugely important. You wouldn’t walk up to a stranger and tell them “that’s a terrible pair of shoes.” You wouldn’t tell a random person “Your hair looks funny.” I’d hope you wouldn’t turn down an invitation to a birthday by standing on a podium in front of a large group of people and say “I will not be attending this!” It’s rude, it’s unnecessary – But I think the technology we have is in part to blame.