Why Can't I Use This Guild Name? (Says It's Censored)

I tried creating the following Guild name - Enemy Territory Guild Wars with the tag ETGW but when I tried creating it, it said "either the guild name or tag you have chosen contains a censored word. Please choose a new name or tag and try again".

My guess is that they disallow "Guild Wars" in the names of characters or guilds. I don't see anything that could be construed as offensive.

Probably "Guild Wars," as it would imply that you are a representative of Arenanet or something.

Ah right, cheers.