Social influence shapes consumers' decision-making process by observing other consumers' actions. Having shown that social influence affects consumers' actual purchases (beyond price and discount) using longitudinal secondary data from Groupon, we conducted a lab experiment, including eye...

User registration is an important prerequisite for the success of many websites that rely on network externalities for value creation, such as social networking and directory websites that need a large number of users to create network externalities. It is not always desirable for users,...