I think it's always a good idea to show a little more civility. It's always good to contact the mod staff to help mediate disputes, but there are also steps that everyone can take to keep things a little more friendly here.
Some tips: take deep breaths. Remember, it's only a blog, and should be for recreation. It's a real person you're conversing with, rather than a faceless computer screen, so remember that they've got feelings, as well. It's okay to walk away from disputes, and if somebody attacks you, it's perfectly acceptable to just move on, rather than defending your honor. Overall, just be courteous and respectful.