Facebook's stock market debut arrives billed as the biggest tech listing in history, raising more than five billion dollars and drawing comparisons to both Google's rise and the dot-com bust. This segment lays out the numbers behind the hype: revenue of $3.71 billion in 2011, an 88 percent jump from the year before, and early backer Accel Partners watching a $2.5 million stake balloon toward a potential $10 billion payout. It weighs that growth against the pressure a newly public company faces to keep raising profits without driving away the users who generate its ad revenue. A second story runs alongside it, following Angela Merkel to China as she tries to persuade Beijing to help fund the eurozone, only to be turned down on debt purchases, IMF contributions, and Iran oil sanctions, despite a quarter of China's reserves already sitting in euros. Both stories turn on the same question: whether early promise translates into lasting value.