All i know is that this mudd is ignorant and snotty because of it's increasing popularity. My guess is that this will get worse. Try choosing a name on this mudd. You'll have guaranteed difficulty for 15 minutes of disapproval or more even if your name meets each and every condition listed.
I would advise against creating a character on this mudd. It is a painful process and definitely not fun. But if you have an immort friend on the mudd, g'ahead!