Poor Mark Zuckerberg is having one helluva of a month. The Palo Alto whiz kid’s not only smarting from having launched the biggest IPO flop in a decade, he’s also been booted off the Bloomberg Billionaires Index. The 28-year-old lost $1.5 billion yesterday as Facebook shares plunged nearly 10 percent. Perhaps the tech luminary had some kind of financial fiasco premonition, which could explain that tiny ruby on Priscilla’s finger and his penchant for stiffing Italian waiters. But with $14.7 billion remaining, we’re not letting him off the hook that easily.