Facebook has youngest staff among top tech firms

Facebook employees are the youngest and most satisfied, and yet the most stressed, among workers at big technology companies, a survey found. Facebook has the lowest median age, 26, as well as the highest portion of female workers, 33 percent, among nine of the industry's top businesses, according to PayScale, a Seattle research firm. Employees at Hewlett-Packard and IBM are the oldest surveyed, with a median age of 44. The social-networking site, run by the 27-year-old Mark Zuckerberg, has thrived by disrupting more-established technologies, such as Internet search and Web portals. That upstart spirit extends to its hiring policies, where workers aren't judged by how many years they've spent in the business.