Not much of a big error but when going to staff.php while not a staff member you get this error:
Fatal error: Call to a member function endpage() on a non-object in /home/paul/public_html/sglobals.php on line 68
Like I said, nothing big, maybe not big enough to post so if so don't flame me please.
EDIT: Just a question, when you try to send a message why does it say: "OR Enter a username to send to:" before the input field where you put the username? There is nothing before OR?
EDIT: Never mind I just read it and noticed you are not looking for errors but instead hacks, I will still leave this out there though so people can fix it.