Byungjoon Yu

Online communities have experienced burgeoning popularity over the last decade and have become a key platform for users to share information and interests, and to engage in social interactions. Drawing on the social contagion literature, the authors examine the effect of online social connections on users’ product purchases in an online community. They assess how product, user, and network characteristics influence the social contagion effect in users’ spending behavior. The authors use a unique

Abstract Business-to-business (B2B) electronic commerce has become an important issue in the debate about electronic commerce. How should the intermediary charge suppliers and buyers to maximize profits from such a marketplace? We analyze a monopolistic B2B marketplace owned by an independent intermediary. The marketplace exhibits two-sided network effects where the value of the marketplace to buyers is dependent on the number of suppliers, and the value to suppliers is dependent on the number o

In today’s emerging and competitive mobile social media market, companies continuously endeavor to improve service quality and customer satisfaction in order to gain a competitive advantage and ensure long-term sustainability. The objective of this study is to identify the relationship between service quality, customer satisfaction, and customer loyalty in mobile social media. Moreover, this study examines the role of customer satisfaction as a mediator. The proposed research model consists of f

This paper analyzes electronic marketplaces with different ownership structures: biased marketplaces and neutral marketplaces. Biased marketplaces can be either buyer-owned or supplier-owned, whereas neutral marketplaces are owned by independent third parties. We develop a single-period model, with fulfilled expectations equilibrium. The buyers experience positive network effects that are a function of the number of suppliers and the suppliers receive similar positive network effects depending o

Our study on the Buy-it-now (BIN) option at electronic auctions examines the impact of information in making electronic transactions more efficient. We show that the BIN price itself works as valuable information, which can improve the performance of auctions even though the option may discourage bidders from participating in auctions because of the possibility of losing the auction when a competing bidder executes the option. With auction data, we empirically show that, even when the BIN option

Shortly after Groupon started its business in 2008, selling one deal a day with substantial price discounts, daily-deal sites became new online shopping places for many people. Starting with Groupon, most daily-deal sites required that voucher sales be higher than a predetermined number before deals become active. This feature, known as the “tipping point,” was a unique characteristic of the daily-deal business and is identified as one of the most prominent features of social shopping. Most dail

Despite the tough environment dot-com firms are facing, electronic business-to-business (B2B) marketplaces are becoming an important and growing part of electronic commerce. An important question in the context of electronic B2B marketplaces concerns the ownership structure of B2B marketplaces. At the advent of electronic B2B marketplaces, ìneutral marketplaces,î independent of buyers and suppliers, were commonplace. Later, incumbent companies (suppliers or buyers) came together to create iÌ

There are two popular forms of business-to-business (B2B) marketplaces: public marketplaces and private channels. We study why firms choose either or both of these sourcing channels. Using a framework of decision making under uncertainty, we explain firms' choice of B2B channels as a hedging strategy and as a method of obtaining greater managerial flexibility for the future. We show that greater uncertainty can lead to higher investment with firms more likely to invest in both public and private

온라인 게임을 필두로 가상 세계는 급속한 성장을 거듭하고 있다. 그리고 그 가상 세계에 있는 가상 자산과 그 자산이 유통되는 가상 경제가 현실 경제와 맞물려, 주고받는 영향력 또한 점점 늘 어나고 있다. 이에 가상 세계나 경제 혹은 자산에 대한 논의가 활발해지고 있다. 하지만 여전히 사 회의 법적 환경적 조건과 기업의 정책에 따라서 가상 경제의 양상이 매우 다양해질 수 있다는 점은 간과되고 있다. 그 까닭에 실천적인 관점에서 가상 경제의 영향력이 체계적으로 관리되지 않고 있 다. 본 연구에서는 가상 세계를 6개의 주체와 5종류의 거래를 가진 시스템으로 보고, 거래 조합의 경우가 24가지로 도출될 수 있음을 보이며, 그 중 4가지 대표 유형을 뽑아 그 특성을 정리했다. 이 와 같은 유형 분류는 특징을 더 잘 이해하게 해 줄 뿐만 아니라, 함의들을 통하여 향후 가상세계의 관리 및 개선 노력에 도움을 줄 것으로 기대된다.