Gal Oestreicher-Singer

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The content industry has been undergoing a tremendous transformation in the last two decades. We focus in this paper on recent changes in the form of social computing. Although the content industry has implemented social computing to a large extent, it has done so from a techno-centric approach in which social features are viewed as complementary rather(More)
The program (crawler) which collects the graph starts at a popular book. It then traverses the co-purchase network using a depth-first search. Intuitively, in a depth-first search, one starts at the root (in our case, the one popular book chosen) and traverses the graph as far as possible along each branch before backtracking. At each page, the crawler(More)
the Area Editor, and two anonymous reviewers for a number of helpful critiques and suggestions. Abstract Conventional wisdom suggests that network effects should drive faster market growth due to the bandwagon effect. However, as we show, network externalities may also create an initial slowdown effect on growth because potential customers wait for early(More)
O commercial interactions have increased dramatically over the last decade, leading to the emergence of networks that link the electronic commerce landing pages of related products to one another. Our paper conjectures that the explicit visibility of such “product networks”can alter demand spillovers across their constituent items. We test this conjecture(More)
Many sites have recently begun to encourage user participation and provide consumers with a virtual community wherein the user can create an on-site identity, make friends, and interact with other consumers. We study the interplay between users’ functional and social behavior on media sites and their willingness to pay for premium services. We use data from(More)
We report on a research project that studies how network structures affect demand in electronic commerce, using daily data about the graph structure of’s co-purchase network for over 250,000 products, gathered over this year. We describe how the presence of such network structures alters demand patterns by changing the distribution of traffic(More)
How do networks generate externalities, such as spillovers or peer effects? Quantifying these externalities is challenging due to the endogeneity in network formation. I tackle this problem by exploiting local exogenous shocks on a small number of nodes in the network and investigate spillovers of attention on the German Wikipedia. I show how the link(More)
If digital rights are: Excessively restricted: Digital products are not valuable enough substitutes for their tangible counterparts, and the transformation fails. Unrestricted: Widespread piracy can lower the legal sale of tangible and digital goods, and threaten the industry’s continued existence. Effectively balancing these objectives involves:(More)