How Facebook Has Changed Since Going Public 1 Year Ago

"Facebook was not originally created to be a company," CEO Mark Zuckerberg wrote in his SEC Registration letter a little more than three months before Facebook went public on May 18, 2012. "It was built to accomplish a social mission -- to make the world more open and connected." In the year since the Facebook IPO, some things haven't changed: Zuckerberg still sports his trademark hoodies, employees still rate their company and their founder highly, and Facebook still talks about its grand missi...