The research adopts the technological affordance approach and the theory of planned behavior (TPB) to examine the role of enterprise social media (ESM) in employee communication and its effects on employees in the context of mainland China. The research postulated that organizations can actualize affordances of ESM to influence employees' cognitive perceptions of ESM (i.e., attitude, subjective norms, and perceived behavioral control) that further affect their ESM use intention and relationships with organizations (i.e., employee-organization relationships; EORs). Using a mixed-methods approach to examine Enterprise WeChat (EWeChat), the research interviewed 36 participants to explore organizational actions of EWeChat affordance actualization and employee perceptions about EWeChat use in mainland China. An online survey with 427 mainland Chinese employees adopting EWeChat was conducted to investigate the role of ESM affordance actualization in forming the employees' intention to continuously use EWeChat, as well as in cultivating their EORs through their attitude, subjective norms, perceived behavioral control, and habits of EWeChat use. Key results of the research include the following. Thirteen EWeChat affordances and means of actualization (i.e., association, control, diversity, feedback, outeraction, perpetual contact, persistence, personalization, portability, privacy, social presence, synchronicity, and visibility) for specific organizational goals were identified. The influence of EWeChat affordance actualization on employees' intention to continuously use EWeChat was mediated by their perceived benefits and risks of EWeChat use. The utilitarian benefit, hedonic benefit, avoidance of work-life conflicts, social concerns, privacy concerns, and perceived behavioral control were positive indicators of the continuous EWeChat-use intention, while performance risk was a negative indicator. The effects of affordance actualization on EORs were partially mediated by employees' perceived utilitarian benefit and perceived professional image related to EWeChat use. The research extends the TPB to predict ESM use in Chinese workplaces. It explicates ESM affordance actualization as the interaction between ESM and organization (actor 1), and also between ESM and employees (actor 2). It also evidences that ESM can be used as a relationship cultivation tool. The research sheds light on how organizations in mainland China can effectively configure their ESM to maximize the efficacy and relational outcomes of its mobile application in employee communication

The research adopts the technological affordance approach and the theory of planned behavior (TPB) to examine the role of enterprise social media (ESM) in employee communication and its effects on employees in the context of mainland China. The research postulated that organizations can actualize affordances of ESM to influence employees' cognitive perceptions of ESM (i.e., attitude, subjective norms, and perceived behavioral control) that further affect their ESM use intention and relationships with organizations (i.e., employee-organization relationships; EORs). Using a mixed-methods approach to examine Enterprise WeChat (EWeChat), the research interviewed 36 participants to explore organizational actions of EWeChat affordance actualization and employee perceptions about EWeChat use in mainland China. An online survey with 427 mainland Chinese employees adopting EWeChat was conducted to investigate the role of ESM affordance actualization in forming the employees' intention to continuously use EWeChat, as well as in cultivating their EORs through their attitude, subjective norms, perceived behavioral control, and habits of EWeChat use. Key results of the research include the following. Thirteen EWeChat affordances and means of actualization (i.e., association, control, diversity, feedback, outeraction, perpetual contact, persistence, personalization, portability, privacy, social presence, synchronicity, and visibility) for specific organizational goals were identified. The influence of EWeChat affordance actualization on employees' intention to continuously use EWeChat was mediated by their perceived benefits and risks of EWeChat use. The utilitarian benefit, hedonic benefit, avoidance of work-life conflicts, social concerns, privacy concerns, and perceived behavioral control were positive indicators of the continuous EWeChat-use intention, while performance risk was a negative indicator. The effects of affordance actualization on EORs were partially mediated by employees' perceived utilitarian benefit and perceived professional image related to EWeChat use. The research extends the TPB to predict ESM use in Chinese workplaces. It explicates ESM affordance actualization as the interaction between ESM and organization (actor 1), and also between ESM and employees (actor 2). It also evidences that ESM can be used as a relationship cultivation tool. The research sheds light on how organizations in mainland China can effectively configure their ESM to maximize the efficacy and relational outcomes of its mobile application in employee communication

This dissertation studies economic issues in the digital economy with a specific focus on the economic aspects of how firms acquire and use consumer data. Chapter 1 empirically studies the drivers of digital attention in the space of social media applications. In order to do so I conduct an experiment where I comprehensively monitor how participants spend their time on digital services and use parental control software to shut off access to either their Instagram or YouTube. I characterize how participants substitute their time during and after the restrictions. I provide an interpretation of the substitution during the restriction period that allows me to conclude that relevant market definitions may be broader than those currently considered by regulatory authorities, but that the substantial diversion towards non-digital activities indicates significant market power from the perspective of consumers for Instagram and YouTube. I then use the results on substitution after the restriction period to motivate a discrete choice model of time usage with inertia and, using the estimates from this model, conduct merger assessments between social media applications. I find that the inertia channel is important for justifying blocking mergers, which I use to argue that currently debated policies aimed at curbing digital addiction are important not only just in their own right but also from an antitrust perspective and, in particular, as a potential policy tool for promoting competition in these markets. More broadly, my paper highlights the utility of product unavailability experiments for demand and merger analysis of digital goods. I thank Maayan Malter for working together with me on collecting the data for this paper. Chapter 2 then studies the next step in consumer data collection process – the extent to which a firm can collect a consumer’s data depends on privacy preferences and the set of available privacy tools. This chapter studies the impact of the General Data Protection Regulation on the ability of a data-intensive intermediary to collect and use consumer data. We find that the opt-in requirement of GDPR resulted in 12.5% drop in the intermediary-observed consumers, but the remaining consumers are trackable for a longer period of time. These findings are consistent with privacy-conscious consumers substituting away from less efficient privacy protection (e.g, cookie deletion) to explicit opt out—a process that would make opt-in consumers more predictable. Consistent with this hypothesis, the average value of the remaining consumers to advertisers has increased, offsetting some of the losses from consumer opt-outs. This chapter is jointly authored with Yeon-Koo Che and Tobias Salz. Chapter 3 and Chapter 4 make up the third portion of the dissertation that studies one of the most prominent uses of consumer data in the digital economy – recommendation systems. This chapter is a combination of several papers studying the economic impact of these systems. The first paper is a joint paper with Duarte Gonçalves which studies a model of strategic interaction between producers and a monopolist platform that employs a recommendation system. We characterize the consumer welfare implications of the platform’s entry into the production market. The platform’s entry induces the platform to bias recommendations to steer consumers towards its own goods, which leads to equilibrium investment adjustments by the producers and lower consumer welfare. Further, we find that a policy separating recommendation and production is not always welfare improving. Our results highlight the ability of integrated recommender systems to foreclose competition on online platforms. The second paper turns towards understanding how such systems impact consumer choices and is joint with Duarte Gonçalves and Shan Sikdar. In this paper we study a model of user decision-making in the context of recommender systems via numerical simulation. Our model provides an explanation for the findings of Nguyen et. al (2014), where, in environments where recommender systems are typically deployed, users consume increasingly similar items over time even without recommendation. We find that recommendation alleviates these natural filter-bubble effects, but that it also leads to an increase in homogeneity across users, resulting in a trade-off between homogenizing across-user consumption and diversifying within-user consumption. Finally, we discuss how our model highlights the importance of collecting data on user beliefs and their evolution over time both to design better recommendations and to further understand their impact.

The diploma thesis focuses on e-commerce in small businesses in connection with marketing and social networks. The first chapter focuses on the marketing processes and the possibility of use of the Internet in small businesses. In the second chapter I deal with the rules of creation of the corporate website, I describe several Internet tools to promote the website (Google Analytics) and deal with search engine optimization (SEO). The third chapter is devoted to social media and a number of case studies describing the use of the social network Facebook in marketing. The final chapter four is the result of the previous chapters, all the theoretical findings are applied to the two real companies AS. ROVI, s.r.o. and METRO FLORENC, s.r.o. In conclusion I am summarizing the facts mentioned above and set out recommendations for both companies and small businesses in general. This thesis was designed as a guide for small businesses -- for them to be thaught how to effectively use modern Internet tools to improve their own promotion and hence profit.

Thesis (MPhil)--Stellenbosch University, 2013. / ENGLISH ABSTRACT: The primary purpose of this study is to explore the social media habits of South African previously disadvantaged entrepreneurs and the way in which the activity of online social networking through social networking sites (SNS) results in the outcome of building social capital for a business venture. At the heart of addressing the research topic is the concept of selfefficacy, which is explored as a key component of human motivation and behaviour. The study explores how self-efficacy beliefs are developed with regard to social media usage and their potential to influence positive outcomes for a business. Based on the research topic, the study which is empirical in nature, has applied a qualitative research design in order to interpret rather than measure self-efficacy behaviours related to social media usage. A purposive non-probability sampling procedure has been adopted to select twelve previously disadvantaged South African entrepreneurs for the study. Semi-structured interviews provide for an interactive and insightful data collection process. As a qualitative study, attention is given to guidelines which establish reliability and validity. Key findings from the study support and refine established Internet selfefficacy research (Eastin & LaRose, 2000) based on Social Cognitive Theory (Bandura, 1986). Based on the established relationships between various constructs and self-efficacy beliefs, the results of the study have been interpreted positively. The findings of the study contribute to the current digital divide debate, and point to a narrowing of the access and participation gap. According to the sample, social media has become embedded in their daily lives for both social and business purposes, and is contributing towards building social capital. This study provides scope to further explore social media as a new opportunity for previously disadvantaged entrepreneurs in South Africa.

My research illustrates new school librarians’ information practices by studying their critical examination of information and information seeking and how their workplace conditions impact their work situation in terms of the prerequisites for information and knowledge sharing. Interviews with ten new school librarians were conducted and recorded. The transcriptions were analyzed through qualitative thematic analysis where models of information seeking, organizational culture and information culture were used in order to concretize the social interplay of the information practices. The new school librarians used everyday life information seeking more than traditional search strategies. All of the participants expressed that their school did not prioritize media and literacy (MIL) work or that they did not prioritize it enough. All of the participants cooperated with other librarians both in person and through digital networks, hence the epithet herd animals. They conveyed that they too make source criticism mistakes and that transparency is part of source confidence. Eight participants described information seeking problems, such as pay walls and information overload. The professors’ information packed work is an interaction barrier for the new school librarians. The introductions at the schools pave the ground for information sharing. Schools are naturally hierarchical and market oriented. A relation based information culture benefits the school library’s inclusion. Reading is prioritized over MIL at the schools. This relates to the perception that a librarian only work with books, which can be changed through a well-developed cooperation between professors and librarians, active work from the librarians and the right resources for MIL work. Therefore the participants who worked at smaller schools and/or schools with a clan culture had a better chance to work with MIL. This is a two years master’s thesis in Library and Information Science.