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This study investigates a range of traditional and technological factors that contribute to credibility perceptions for three categories of online news sources. These sources include mainstream (usatoday.com, nytimes.com), independent (thedrudgereport.com, axisoflogic.com), and index-type (news.google.com, yahoo.news.com) websites. While traditional dimensions of credibility remain influential, results suggest that the hypertextuality of index-type online news sources is of particular importance. Multimediality and interactivity did not influence credibility perceptions. These results support the perspective that online media differ based on credibility and users' perceptions are in part based on the technological affordances of media. A major contribution of this research lies in the empirical demonstration of the relationships between technological characteristics of various online news sources and subsequent credibility assessments.

Social-networking sites like Facebook enable people to share a range of personal information with expansive groups of ''friends.'' With the growing popularity of media sharing online, many questions remain regarding antecedent conditions for this behavior. Contingencies of self-worth afford a more nuanced approach to variable traits that affect self-esteem, and may help explain online behavior. A total of 311 participants completed an online survey measuring such contingencies and typical behaviors on Facebook. First, exploratory factor analyses revealed an underlying structure to the seven dimensions of self-worth. Public-based contingencies explained online photo sharing (b ¼ 0.158, p < 0.01), while private-based contingencies demonstrated a negative relationship with time online (b ¼ À0.186, p < 0.001). Finally, the appearance contingency for self-worth had the strongest relationship with the intensity of online photo sharing (b ¼ 0.242), although no relationship was evident for time spent managing profiles.

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This research explores variables related to the use of personal-journal style blogs for interpersonal goals. A random sample of bloggers completed surveys exploring how the combination of extraversion and self-disclosure affect strong tie network size, which in turn serves as motivation to use blogs as an alternative communication channel. Bloggers who exhibit both extraversion and self-disclosure traits tend to maintain larger strongtie social networks and are more likely to appropriate blogs to support those relationships. Age, gender, and education have no relationship to network size, blog content, or the use of blogs as a relationship maintenance tool. These results contribute to the continuing discussion about the impact that the Internet and its tools are having on relationships by suggesting that, rather than promoting isolation, computer-mediated communication tools such as blogs often function to enhance existing relationships.