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.[42] Microsoft's purchase included rights to place international adverts on the social networking site.[43] In October 2008, Facebook announced that it would set up its international headquarters in Dublin, Ireland.[44] In September 2009, Facebook said that it had turned cash-flow positive for the first time.[45] In November 2010, based on SecondMarket Inc. (an exchange for privately held companies' shares), Facebook's value was $41 billion; it slightly surpassed eBay's became the third largest American web company after Google and Amazon.com.[46] Facebook on the Ad-tech 2010 Traffic to Facebook increased steadily after 2009. More people visited Facebook than Google for the week ending March 13, 2010.[47]