ID:278058
 
As a new account name, the symbols permitted are numbers, letters(uppercase and lowercase) and the ".","_" and "-" symbols, right ?
I know that the underscore is allowed ^-^ *looks at account name* :o

EDIT
And the hyphen *looks at your account name* :o
Daniel.Beta also. That explains all three. :)
In response to Madow
I was thinking about his, but I wasn't sure if it was a period or not xD