/a/ in need of some dire help

Dear /prog/enitors.

We need your help.

Some idiot script kiddie has written a script that spams /a/ with the same image rotated by 90 degrees.  at the moment it is fucking the mods over because the content is changing therefore they cant ban by ip.

What im asking is for you guys to come up with a way to combat this spam.  Cheers

CAPTCHAS work in theory. The what rapidshare thought.
..until they got proven wrong,and forced to design harder captchas.
Remember “find the cats” in the word?

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What actually transpires beneath the veil of an event horizon? Decent people shouldn't think too much about that.