That doesn't make as much sense as you think; it's only easier to implement. I'll give you my own example for a username I wanted for a community. "dgrayman" is a username that has been deleted and purged, and I don't know for sure, but it seems to have been a personal account. D.Gray-Man is a popular series that has a manga and had an anime that covered most of the manga but ended. Several people still follow the manga though, as it's published monthly in Japan. That is why I'm interested in making a community of that name, because the series is one of my favorites.