Silicon Valley is on a roll right now. The relatively low levels of capital needed to start a software company has meant that start up incubators and small software companies wanting to be the "next big thing" are popping up all over. Bars are crowded, San Francisco is hip and traffic is worse than L.A. All signs of a booming economy and tech infrastructure that has spawned new wealth-generators like Facebook, Zynga, Instagram and now Yammer. And yet, this is just the face we like to present to the world. [...]