Back in May of this year, Facebook founder and "Nietzchean superdork" Mark Zuckerberg brought in a Google veteran named Sheryl Sandberg as COO to help whip Facebook into shape for the company's inevitable IPO. The 38-year-old Sandberg was a good decade and a half older than most of Facebook's wunderkind techies, many of whom were Zuckerberg's friends from Harvard and Exeter. There were problems almost immediately.