Warning about strategic manipulation of Internet forums appears in October Management Insights

Hanover, MD, October 16, 2006 – The danger of firms manipulating Internet-based opinion forums by posting anonymous messages praising their products is the subject of a paper in the Management Insights section of the October issue of Management Science, the flagship journal of the Institute for Operations Research and the Management Sciences (INFORMS®).

Management Insights, a new monthly feature of the journal, is a digest of important research in business, management, operations research, and management science. It appears in every issue of the monthly journal.

Strategic Manipulation of Internet Opinion Forums: Implications for Consumers and Firms by Chrysanthos Dellarocas examines policy decisions (is Internet forum manipulation socially harmful?), R&D decisions (does it pay to invest in technologies that discourage online manipulation? Who should bear the cost of such investments?), and firm and consumer attitudes towards Internet forums (how much should consumers trust online forums? How much should firms invest in trying to manipulate them?).

The October issue of Management Insights can be viewed online at http://www.atypon-link.com/INF/doi/abs/10.1287/mnsc.1060.0644. The full papers associated with the Insights are available to Management Science subscribers. Individual papers can be purchased at http://institutions.informs.org. Future issues of Management Insights can be accessed at http://mansci.pubs.informs.org/.

The Insights in the October issue are:

  • Location Choices Across the Value Chain: How Activity and Capacity Influence Collocation by Juan Alcácer

  • Vendor Certification and Appraisal: Implications for Supplier Quality by Iny Hwang, Suresh Radhakrishnan, and Lixin (Nancy) Su

  • Coordination Supply Chains with Simple Pricing Schemes: The Role of Vendor-Managed Inventories by Fernando Bernstein, Fangruo Chen, and Awi Federgruen

  • Transshipment of Inventories Among Retailers: Myopic vs. Farsighted Stability by Greys Sošić

  • Partnership in a Dynamic Production System with Unobservable Actions and Noncontractible Output by Erica L. Plambeck and Terry A. Taylor

  • Assortment Planning and Inventory Decisions Under a Locational Choice Model by Vishal Gaur and Dorothée Honhon

  • Characterization of the Bullwhip Effect in Linear, Time-Invariant Supply Chains: Some Formulae and Tests by Yanfeng Ouyang and Carlos Daganzo

  • The Process of Innovation Assimilation by Firms in Different Countries: A Technology Diffusion Perspective on E-Business by Kevin Zhu, Kenneth L. Kraemer, and Sean Xu

  • Measuring Cross-Category Price Effects with Aggregate Store Data by Inseong Song and Pradeep K. Chintagunta

  • A Data Disclosure Policy for Count Data Based on the COM-Poisson Distribution by Joseph Kadane, Ramayya Krishnan, and Galit Shmueli

  • A Theory of Banks' Industry Expertise, Market Power and Credit Risk by Alex Stomper

  • Exact Solutions to Task Allocation Problems by Andreas Ernst, Houyuan Jiang, and Mohan Krishnamoorthy

INFORMS journals are strongly cited in Journal Citation Reports, an industry source. In the JCR subject category "operations research and management science," Management Science ranked in the top 10 along with two other INFORMS journals.

The special MBA issue published by Business Week includes Management Science and two other INFORMS journals in its list of 20 top academic journals that are used to evaluate business school programs. Financial Times includes Management Science and four other INFORMS journals in its list of academic journals used to evaluate MBA programs.


The Institute for Operations Research and the Management Sciences (INFORMS®) is an international scientific society with 10,000 members, including Nobel Prize laureates, dedicated to applying scientific methods to help improve decision-making, management, and operations. Members of INFORMS work in business, government, and academia. They are represented in fields as diverse as airlines, health care, law enforcement, the military, financial engineering, and telecommunications. The INFORMS website is www.informs.org. More information about operations research is at www.scienceofbetter.org.

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