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During the past decade, usage of online social network sites has grown dramatically, now exceeding search engines as the most visited Internet sites (Experian Hitwise, 2011). With the rise of such mega-sites as Facebook, which by itself now boasts more than 750 million active users around the world (Facebook Press Room, 2011), online social network site (SNS) use has become a fixture in the lives of a large proportion of the world's 2 billion Internet users (Internet World Stats, 2011). Growing evidence from analyses of SNSs use suggests that these sites have become important tools for managing relationships with a large and often heterogeneous network of people who provide social support and serve as conduits for useful information and other resources (boyd and Ellison, 2007; Ellison, Steinfield, and Lampe, 2007). Such SNS benefits are derived from social relationships and have been broadly …