Internet jargon; when a commenter is overly excited, they tend to overuse exclamation points. In the rush to add many exclamation points, the shift key might no

Internet jargon; when a commenter is overly excited, they tend to overuse exclamation points. In the rush to add many exclamation points, the shift key might not be held down for all of them. So you end up with things like "OMG!!!!111"