| http://www.w3.org/ns/prov#value | - Social networking sites are online platforms designed for multimedia communication and sharing, such as with pictures, messages, and Web site links.1 More than 750 million people used social networking technologies worldwide in 2010, and this number is expected to increase to 1.5 billion by 2015.2 Owing to their ability to reach people in almost all populations and locations, HIV prevention resear
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