Facebook co-founder and CEO Mark Zuckerberg figures he's about the last guy anyone would come to for advice on how to launch an initial public offering (IPO). Facebook's IPO turned out to be tumultuous and disappointing, but in an on-stage interview with TecCrunch founder Michael Arrington at the Disrupt conference in San Francisco Wednesday, Zuckerberg said it was a learning experience that he thinks bettered the company.