An increasingly popular trend in online businesses is the adoption of the freemium model, in which premium features are provided along with free features. By providing free features to a large fraction of users and by managing the social interactions between users and their friends, online...

Consumers’ purchase decisions can be influenced by others’ opinions, i.e., word-of-mouth (WOM), and/or others’ actions, i.e., observational learning. While information technologies are creating increasing opportunities for firms to facilitate/manage these two types of social interaction,...

With the rapid development of information and communication technologies, various online shopping platforms have emerged. To understand the success of platform strategies, it is important to verify the features that are important to attract sellers. To estimate the economic value of free...