When someone decides to use an ISS I know there's a character limit on how short your username can be. What is it exactly?

Thanks!

Just copied and pasted this from an old board - the user who posted it said it was from the ISS page. ;)

• You cannot use any special characters except for _(underscore)
• You may only have one Underscore in your whole username.
• The underscore in your name must not preceed or succeed your name (IE username and username are invalid)
• No spaces or periods(.). Your name change will fail. Alphanumeric characters ONLY. (and one underscore between alphanumeric characters)
• Your new username must be longer than 2 characters. (Three is the minimum length)

That's what I was thinking it was but wanted to make sure before I purchased one. Thank you . :D

My pleasure! ^_^