Which types of networks favor the diffusion of innovations in the sense that an innovation whose intrinsic benefits are greater than those of an established choice will be able to replace the latter when it is initially used only by a small fraction of a large population? For deterministic and...

Advertising and innovation are two engines for firms to escape competition through a better attraction power toward consumers or quality advantage. We propose a model that encompasses both the static and dynamic interactions between R&D, advertising and competitive environment. This model...

Online Reputation Systems are a key, but under-appreciated, component of virtually every social web application. They play an important role in inducing user participation, good behavior and quality contributions. Despite their importance, however, their practical design and implementation has,...

Virtual worlds have become the new frontier of social science research because of the growing links and similarities to the real world. One virtual world in particular, Second Life, has become important because it has taxes, virtual land, and its currency, the Linden Dollar, is exchangeable for...

This paper aims to describe the links between the transformation of business models based on network effects and multisided markets, and the strategies adopted by the ventures in the context of the digital economy. We refer those links to the ability of the entrepreneur (or the firm as a whole)...

This paper is part of a larger project that sets out to explore the utility of network concepts for political communications research. In recent years there have been efforts to develop the theoretical basis of political communications research using approaches from institutionalist sociology...

Social networks, such as Facebook and Myspace have witnessed a rapid growth in their membership. Some of these businesses have tried an advertising-based model with very limited success. However, these businesses have not fully explored the power of their members to influence each other’s...

It has been conjectured that the peer-based recommendations associated with electronic commerce lead to a redistribution of demand from popular products or "blockbusters" to less popular or "niche" products, and that electronic markets will therefore be characterized by a "long tail" of demand...

We present a method for accurately predicting the long time popularity of online content from early measurements of user's access. Using two content sharing portals, Youtube and Digg, we show that by modeling the accrual of views and votes on content offered by these services we can predict the...

This paper provides a basic conceptual framework for interpreting non-price instruments used by multi-sided platforms (MSPs) by analogizing MSPs as "private regulators" who regulate access to and interactions around the platform. We present evidence on Facebook, TopCoder, Roppongi Hills and...