This study examines how trust is related to online social institutions, self-disclosure, mode of communication, and message privacy in a popularTrust is a vital facet of social interaction that has facilitated meaningful and productive relationships throughout human evolution (Dirks, 1999;Rotter, 1971), but the structures that support the development and maintenance of trust today are drastically different than in previous eras. According to Giddens (1991), one of the key ways in which trust has changed is that it has become disentangled from external factors (e.g. social institutions), and instead is more closely related to personal, individual-level commitment. While this gives individuals more personal control over whom they may choose to trust, the decay of social institutions such as unions, clans, and traditional neighborhoods reduces an important source of social solidarity. Trust is thus problematic and contested in our modern society, with individuals largely left to fend for themselves in a merciless relational environment.