Recently, a controversial new privacy policy on the mobile app platform, which requires app developers to display privacy labels and request data-tracking permissions from users, has sparked a heated discussion among practitioners in digital advertising. In this paper, we build a game-theoretic...

Question-Answer (Q&A) forums are gaining popularity as a user-engagement tool to drive traffic on multi-service portals. In a platform market model, demand-side users seek answers from the supply-side users, since such answers can indicate value offered, reduce buyer uncertainty and offer social...

Opinion spammers exploit consumer trust by posting false or deceptive reviews that may have a negative impact on both consumers and businesses. These dishonest posts are difficult to detect because of complex interactions between several user characteristics such as review velocity, volume, and...

The familiar ’five-star’ ratings and reviews system makes it easy for consumers to use product evaluations across competing platforms to choose the product or service that is most likely to match their preferences. However, the ability to easily shop around for ratings and reviews raises a...