I have an existential question: Why do people put their user name in the subject when they start a thread about anything? This happens a lot on message boards on the web. In the forum on our site at work, this happens constantly. I often crack up. It's just such a bizarre practice and I can't figure out the psyche behind such an action. I sometimes wonder if they do it with anything in their offline lives. So tell me. Why do you think they do it? Do you have any idea why?