Facebook's rules were only available in english - despite having a way to switch most of facebook to arabic, the guy is obviously not a strong english speaker.
Rules are only guidelines for people who can't (or aren't allowed to) exercise good judgment. Rules are meant to be black and white, but real life is rarely so. In this case absolutely no harm was done, or even suggested, by the guy's actions. Facebook's decision to apply judgment rather than zero-tolerance is commendable.
EDIT: Facebook is still doing the brainless zero-tolerance thing. Shame on them. I should have read the article rather than assume the best.
PS the best company I ever worked for had as the first line of their employee handbook: "Don't do anything stupid just because it is written down in this book."
Re-read the article. They didn't.
Nowhere I saw good faith, just greed for money. He was even asking for money in the initial bug "reports". http://4.bp.blogspot.com/-4LbrTjyKBXc/Ug5sokeeR0I/AAAAAAAAAJ...