[atmavatar]

> but it's a reasonable need too.

Why?

User names are for all practical purposes infinite: merely allowing 10 character alphanumeric usernames already gets you into the quadrillions, nearly enough for every person on the planet to claim a million unique usernames.

The username in question, while short, doesn't seem to have any inherent value, as it does not appear to be a valid word in any language, and the most common acronym expansion for it (Home Access Center) is too generic to be particularly useful as an identifier such that anyone but the original user would fight for its use.