What the Facebook founder did to outmaneuver his competitors, and the challenges he faces to keep employees motivated and investors happy after the IPO:

“One area Facebook will have to prove itself in is mobile. Earlier this month, it amended its public filings with the SEC to disclose that it doesn’t collect any meaningful revenue from smartphones and tablets, and its failure to do so is dampening per-user revenue. Mobile has flummoxed the company for years. In 2008, Jobs asked Facebook to present its iPhone app at Apple’s Worldwide Developers Conference. Instead of taking advantage of the opportunity himself, Zuckerberg sent a Facebook engineer and a marketing manager to handle it. They did such a poor job in auditions attended by Jobs and other Apple executives that Apple pulled them from the presentation, according to the person, who declined to be named for fear of alienating both companies.”