Facebook Platform is a prominent example of an internet-based service for which third-party developers can offer small add-on programs, which are often referred to as applications. The distribution of success of applications is highly skewed. This market structure with few blockbuster applications and a long-tail of unpopular ones is common in the media, entertainment and software industries. Philip Mayrhofer compiled individual-level survey data as well as an original panel data set of Facebook applications in order to examine the market for Facebook applications in detail. Specifically he identifies interdependencies such as bandwagon effects between users and spillovers between applications and analyzes whether they contribute to the concentrated market structure.     Contents - Empirical Analysis of Facebook's Platform for Applications - Determinants of the Discovery and Adoption of Applications -  Information Spillovers between Applications as a Source of Usage   - Determinants of the Discovery and Adoption of Applications -  Information Spillovers between Applications as a Source of Usage      Target Groups - Researchers and students in the field of management and industrial organization - Entrepreneurs and managers in companies with internet-based business models    The Author Dr. Philip Mayrhofer obtained his doctorate degree at the Institute for Innovation Research, Technology Management and Entrepreneurship (Ludwig-Maximilians-Universität München) under the supervision of Prof. Dietmar Harhoff, Ph. D.  .