Ubiquitous social networking services offer new opportunities for developing advantageous relationships by uncovering hidden connections that people share with others nearby. As sharing of personal information is an intrinsic part of ubiquitous social networking, these services are subject to crucial privacy threats. In order to contribute to the design of privacy management systems, we present...

With the support of cloud computing techniques, social coding platforms have changed the style of software development. Github is now the most popular social coding platform and project hosting service. Software developers of various levels keep entering Github, and use Github to save their public and private software projects. The large amounts of software developers and software repositories ...

The important influence of peer recommendations on consumer purchases has been strongly established. However, the growth of electronic discussion boards has recently created an additional channel for product recommendations and endorsements between people who have never met, and anecdotal reports suggest that such recommendations can be influential in subsequent choice. This study examines and ...

The problem of identifying influencers in an online social network (OSN) has received a lot of attention recently. However, the influence a user has on an OSN depends a lot on how active they are, besides their reputation, or the quality of information they are capable of providing. This can be misleading: a common observation about many OSNs is that the most influential users there are not wel...

The modelling of acceptance behaviour of new information technologies is of great utility to managers who need to evaluate the probability of success in the introduction of these technologies. The present study empirically tests the capacity of Fishbein and Ajzen ́s Theory of Reasoned Action (TRA) (1975) and Davis ́s Technology Acceptance Model (TAM) (1989) to help understand the determinants of ...

Given the re-broadcasts (i.e. retweets) of posts in Twitter, how can we spot fake from genuine user reactions? What will be the tell-tale sign — the connectivity of retweeters, their relative timing, or something else? High retweet activity indicates influential users, and can be monetized. Hence, there are strong incentives for fraudulent users to artificially boost their retweets’ volume. Her...

Adopting the view that users perceive their interactions with technological artifacts as social and interpersonal, this paper offers a number of propositions regarding the expected effects of two relationship-level constructs, namely, rapport and intimacy, which have been shown to be influential antecedents to interpersonal relationship satisfaction and interaction quality. Both constructs are ...

Research on the adoption of information systems (IS) has been dominated by mechanistic motivational theories (extrinsic vs. intrinsic motivation). In contrast, the Self-Determination Theory (SDT) goes beyond the traditional dichotomy of extrinsic and intrinsic motivation by distinguishing between different types of motivation based on one’s perceived self-determination when performing a behavio...

With the success of online social networks and microblogs such as Facebook, Flickr and Twitter, the phenomenon of influence exerted by users of such platforms on other users, and how it propagates in the network, has recently attracted the interest of computer scientists, information technologists, and marketing specialists. One of the key problems in this area is the identification of influent...