Price promotions increase sales, at least in the short term, but the effect of price promotions on consumers' product evaluations is not well understood. We focus on the market for mobile apps, a category where price variation, including discounting to a zero price is common. We ask how price...

Peer influence through word-of-mouth (WOM) plays an important role in many information systems but identification of causal effects is challenging. We identify causal WOM effects in the empirical setting of game adoption in a social network for gamers by exploiting differences in individuals’...