Skype
eBay Inc. acquired Skype in 2005 and significantly expanded its customer base to more than 480 million registered users worldwide. To focus on its core e-commerce and payments businesses, eBay Inc. sold a majority stake in Skype in November 2009, retaining a minority investment in the company. In May 2011, Microsoft announced that it had acquired Skype for $8.5 billion.
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