Welcome to MLNO, KnownandUnknown.
Err; what would the short form for that be? Known? Just curious, since not everyone prefers nicknames given by others. =P
Yeah, about that. I'm usually actually KNU or KAU. You can't really say it but you can type it.

But almost anything is fine by me.
Actually, KAU is kinda cool and can be spoken quite nicely, pronounce it like...K U, and said aloud sounds familiar in some way.
Welcome to MLNO, you will indeed find a lot of cool Brickers here and some really intelligent and fine debaters.