"Invalid Second Life Name"?

While looking at the new registration dialog, I jokingly attempted to create an avatar named Nomoney Noland. ( )

I didn't enter an e-mail address (since I didn't actually want the registration to go through), but to my surprise, even though it said the name was "available", it wouldn't enter step 2 because of an "Invalid Second Life Name".

Is this some odd censorship policy or some strange problem with parts of the name being too similar? Does anyone know?

Shame - it would have been a great name.