Attendees look at various devices during the Microsoft Corp. Build Developers Conference in San Francisco, California, U.S., on Wednesday, June 26, 2013. Facebook Inc. is building an application for Microsoft Corp.'s Windows 8, adding one of the most popular programs still missing from the operating system designed to help Microsoft gain tablet customers. Photographer: David Paul Morris/Bloomberg via Getty Images
{"Image ImageDescription": "Attendees look at various devices during the Microsoft Corp. Build Developers Conference in San Francisco, California, U.S., on Wednesday, June 26, 2013. Facebook Inc. is building an application for Microsoft Corp.'s Windows 8, adding one of the most popular programs still missing from the operating system designed to help Microsoft gain tablet customers. Photographer: David Paul Morris/Bloomberg via Getty Images", "Image Copyright": "2013 Bloomberg"}