I wish more people would follow this rule. I'm getting very tired of seeing people being harassed when they make one simple slip of the keyboard, or when a new enthusiast joins and forgets to read a rule or two so there are 20,000 posts below them with the eye rolling face or the dry face. Then I get PMs and IMs "z0mg I h8 n00bs". It's really starting to get on my last nerve.. not to mention, imagine how it looks to a guest who is reading the forums.
We all make mistakes, not to mention we are all here for the same reason, and being a bully is neither mature nor charming.