Facebook security hacker proves point - by posting to Mark Zuckerburg's wall

Have you ever had that situation where you're in touch with a customer service rep just doesn't seem to get your problem, no matter how many times you explain it? So you end up going over their head to their boss?
Well, that's kinda what happened when Khalil Shreateh had to prove that Facebook had a security bug - and he did it by hacking his way on to company founder Mark Zuckerburg's wall.