You're right, it is a limit, presumably for the names being stored in a 32 byte string with null-termination.

But you can't possibly suggest those people to be looking for trouble, as most are merely kids trying to appear "cool" with a fancy name, and many don't even know what Unicode or UTF-8 is. They simply gather some nice looking characters from a character map and assemble a name as if they were playing with LEGO bricks.

For anyone who wants to see the script in action, you can find it on http://forlix.org/ (the table on the bottom right). I have also added some whitespace treatments, so multiple spaces wont be collapsed (the CSS solution white-space:pre isn't yet supported well enough)