Demonstrating compelling causal evidence of the existence and strength of peer to peer influence has become the holy grail of modern research in online social networks. In these networks, it has been consistently demonstrated that user characteristics and behavior tend to cluster both in space...

Buyers’ growing reliance on online consumer reviews as a primary source of product information has created increasing incentives for firms to manipulate reviews to their advantage. While manipulated reviews can impact immediate sales, their effects on buyers’ post-consumption response in...