Facebook Office

Facebook launched a high school version in September 2005, which Zuckerberg called the next logical step. At that time, high school networks required an invitation to join. Facebook later expanded membership eligibility to employees of several companies, including Apple Inc. and Microsoft. Facebook was then opened on September 26, 2006, to everyone of ages 13 and older with a valid e-mail address. On October 24, 2007, Microsoft announced that it had purchased a 1.6% share of Facebook for $240 million, giving Facebook a total implied value of around $15 billion. Microsoft's purchase included rights to place international ads on Facebook. In October 2008, Facebook announced that it was to set up its international headquarters in Dublin, Ireland. In September 2009, Facebook claimed that it had turned cash flow positive for the first time. In June 2010, an online marketplace for trading private company stock reflected a valuation of $11.5 billion.
Traffic to Facebook has increased exponentially since 2009. More people visited Facebook than Google for the week ending March 13, 2010. Facebook has also become the top social network across eight of individual markets in the region, Philippines, Australia, Indonesia, Malaysia, Singapore, New Zealand, Hong Kong and Vietnam, while other brands commanded the top positions in certain markets, including Google-owned Orkut in India, Mixi.jp in Japan, CyWorld in South Korea and Yahoo!’s Wretch.cc in Taiwan.