Goes back to the beginning of MiceChat. When you hit 1000 posts you became a "loser." There was actually a list somewhere that someone... I think it was Club 33 came up with... depending on how many posts. Wish I could find that list... its archived somewhere on the site.
To tell you how long ago that was, I think the highest level was something like 5000 posts to have a "title" of some kind.