Avoid punctuation. Cluster your ideas into massive run-on sentences. Include caps, if possible. End with multiple exclamation points.
The intent: Probably this is meant to signify …intensity? To increase the speed of typing? Actually, I don’t know.
The reality: It’s easy to be misunderstood online. Let’s not make it any easier. When you write in all caps and ignore basic sentence formation, I have only one interpretation. In my mind, your comment is to be read as a hysterical meltdown, complete with sobs of impotent rage. I mentally add, “Leave Brittney alone!” between phrases.