You can turn it off in RTB options:

Seeing who owns private servers might not be that big of a problem anyway, I guess we'll see.
-snip-
I opened a second blockland to show this. My server was opened with the username Blastdown.
What are you trying to show here?
Edit: Oh, I forgot to say, I do like this, though we'll have to get used to naming our servers a bit differently for clans and such, I think the gain outwieghs the price.