Beta 15 upgrade provides some minor stability/performance improvements and squashed some bugs.
In addition, I installed the new "Nicknames" extension. It's pretty simple - you can log in with your "username" but set a different Nickname to be used on the forum. An additional feature is that your name can be anything from the UTF-8 character set, which includes symbols, punctuation, spaces, etc.
Go to your user settings, and change your nickname here if you'd like: