Give the attackers a special discussion board :)
yeah, maybe some easter egg to redirect them to the rick roll video or something.
This is an example of what the "attackers" are trying to do since the morning: http://i.imgur.com/8UoCrqZ.png
... I do look forward to seeing the source code though. I like small forums like this.
http://i.somethingawful.com/cliff/ihateyou/page-267/image-01...
and report back. i'm curious but afraid.