Jérôme Kerviel, the Société Générale trader who lost $6.7 billion of the bank's money, was sentenced to five years in prison today.

After Jerome Kerviel lost his employer, French investment bank Societe Generale, $7.2 billion, he also lost 7 of his 11 friends on Facebook. Smart move by those ex-friends. You never know who's looking at your profile. Of course, at some point, you might be in a similar situation. Because this kind of thing happens all the time. So here's how to defriend that guy who just went into hiding after losing $7.2 billion. You're welcome.

Jerome Kerviel allegedly defrauded France's Societe Generale out of $7.2 billion by falsifying trading records so he could make unauthorized trades. It cost the 144-year old firm nearly a year's worth of net profits. But the Sydney Morning Herald has the real scoop.