Does site architecture matter? The political implications of public- versus private-oriented social network sites in China

Political communication researchers have shown that social network site (SNS) use and online network characteristics can impinge on people's political attitudes and behavior. Nevertheless, individual SNSs have varying site architecture, basic design features, and functionalities, which may influence usage and online network characteristics. This study thus examines whether site architecture matters for understanding the political implications of SNSs. Specifically, this article conceptualizes the distinction between public-oriented and private-oriented SNSs. It contends that the two types of SNSs would have varying impact on political behavior through the kinds of online networks that they tend to sustain. Analysis of a survey of university students in Guangzhou, China (N=897), shows that respondents using public-oriented SNSs tended to have a relatively more public' online network - larger, involving more strangers, and with more connections to public actors. Some of these network characteristics in turn affected political discussion behavior. The analysis thus demonstrates how SNS architecture can indirectly impinge on individual-level political outcomes.