The purpose of this document is to respond to selected questions forcomment on the proposed framework in the FTC report “ProtectingConsumer Privacy in an Era of Rapid Change: A Proposed Framework for Businesses and Policymakers” (December 1st, 2010). Our responses are based on our ongoing...

We use data on a real, large-scale social network of 27 million individuals interacting daily, together with the day-by-day adoption of a new mobile service product, to inform, build and analyze data-driven simulations of the effectiveness of seeding (network targeting) strategies under...

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...