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- 2014
- Article
Drivers and Dynamics of Online Word of Mouth
By: Frank Nagle and Christoph Riedl
- 2013
- Article
Where Not to Eat? Improving Public Policy by Predicting Hygiene Inspections Using Online Reviews
By: Jun Seok Kang, Polina Kuznetsova, Yejin Choi and Michael Luca
Restaurant hygiene inspections are often cited as a success story of public disclosure. Hygiene grades influence customer decisions and serve as an accountability system for restaurants. However, cities (which are responsible for inspections) have limited resources to...
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Keywords:
Safety;
Food;
Governance Compliance;
Mathematical Methods;
Applications and Software;
Public Administration Industry;
Retail Industry;
Food and Beverage Industry
Kang, Jun Seok, Polina Kuznetsova, Yejin Choi, and Michael Luca. "Where Not to Eat? Improving Public Policy by Predicting Hygiene Inspections Using Online Reviews." Proceedings of the Conference on Empirical Methods in Natural Language Processing (2013): 1443–1448.
- 2015
- Working Paper
Online Word of Mouth and Product Review Disagreement
By: Frank Nagle and Christoph Riedl
Studies of online word of mouth have frequently posited―but never systematically conceptualized and explored―that the level of disagreement between existing product reviews can impact the volume and the valence of future reviews. In this study we develop a theoretical...
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Keywords:
Online Word Of Mouth;
Online Communities;
Viral Marketing;
Online Product Reviews;
Quality;
Internet and the Web;
Consumer Behavior;
Marketing Reference Programs;
Social and Collaborative Networks;
Digital Marketing;
Analytics and Data Science
Nagle, Frank, and Christoph Riedl. "Online Word of Mouth and Product Review Disagreement." Harvard Business School Working Paper, No. 13-091, May 2013. (Revised May 2015, selected for AOM Best Paper Proceedings.)
- April 2012 (Revised February 2017)
- Case
Dovernet
By: Robert Simons and Natalie Kindred
This case illustrates the implications of using stringent performance measurement systems to create performance pressure, motivate employee achievement, and sharpen a firm's competitiveness. It opens by describing the downsides of the ruthlessly competitive culture at...
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Keywords:
Motivation and Incentives;
Information Technology;
Competitive Advantage;
Decision Choices and Conditions;
Organizational Culture;
Performance Evaluation;
Compensation and Benefits;
Web Services Industry;
Information Technology Industry;
Vancouver
Simons, Robert, and Natalie Kindred. "Dovernet." Harvard Business School Case 112-061, April 2012. (Revised February 2017.)
- 2016
- Working Paper
Reviews, Reputation, and Revenue: The Case of Yelp.com
By: Michael Luca
Do online consumer reviews affect restaurant demand? I investigate this question using a novel dataset combining reviews from the website Yelp.com and restaurant data from the Washington State Department of Revenue. Because Yelp prominently displays a restaurant's...
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Keywords:
Revenue;
Network Effects;
Reputation;
Social and Collaborative Networks;
Food and Beverage Industry;
Service Industry;
Washington (state, US)
Luca, Michael. "Reviews, Reputation, and Revenue: The Case of Yelp.com." Harvard Business School Working Paper, No. 12-016, September 2011. (Revised March 2016.)
- March 2011 (Revised December 2012)
- Case
Demand Media
By: John Deighton and Leora Kornfeld
Google search had helped Demand Media grow to be a $1.9 billion online publisher. Then, social media and smartphone apps began to change the way people navigated the Internet. How should Demand Media respond? The business ran on a radically new model in which a stable...
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Keywords:
Business Model;
Information Publishing;
Consumer Behavior;
Customization and Personalization;
Internet and the Web;
Publishing Industry
Deighton, John, and Leora Kornfeld. "Demand Media." Harvard Business School Case 511-043, March 2011. (Revised December 2012.) (request a courtesy copy.)
- January 2011 (Revised April 2012)
- Case
BBVA Compass: Marketing Resource Allocation
By: Sunil Gupta and Joseph Davies-Gavin
BBVA Compass, the 15th largest commercial bank in the U.S., is a part of the BBVA Group of Spain, the second largest bank in Spain with $755 billion in assets. In December 2010, Frank Sottosanti, Chief Marketing Officer of BBVA Compass, was reviewing the marketing...
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Keywords:
Advertising;
Resource Allocation;
Marketing Channels;
Marketing Strategy;
Performance Evaluation;
Banking Industry;
United States
Gupta, Sunil, and Joseph Davies-Gavin. "BBVA Compass: Marketing Resource Allocation." Harvard Business School Case 511-096, January 2011. (Revised April 2012.)
- 2010
- Article
Impact of Online Consumer Reviews on Sales: The Moderating Role of Product and Consumer Characteristics
By: Feng Zhu and Michael Zhang
This article examines how product and consumer characteristics moderate the influence of online consumer reviews on product sales using data from the video game industry. The findings indicate that online reviews are more influential for less popular games and games...
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Keywords:
Internet Marketing;
Online Consumer Reviews;
Word Of Mouth;
Long Tail;
Internet and the Web;
Marketing Reference Programs;
Digital Marketing;
Video Game Industry
Zhu, Feng, and Michael Zhang. "Impact of Online Consumer Reviews on Sales: The Moderating Role of Product and Consumer Characteristics." Journal of Marketing 74, no. 2 (March 2010): 133–148.
- August 1999 (Revised September 1999)
- Case
Double Dealmaking in the Browser Wars (A)
Recounts two complex negotiations in which Netscape and Microsoft compete to win a browser contract with AOL--then later with KPMG. After reviewing the web and browser sectors, this case recounts AOL's dramatic negotiations with Netscape and with Microsoft over which...
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Sebenius, James K. "Double Dealmaking in the Browser Wars (A)." Harvard Business School Case 800-050, August 1999. (Revised September 1999.)
- October 1998
- Case
Excite, Inc.--1998
By: Stephen P. Bradley and Kelley Porter
Reviews recent trends and the evolution of the emerging portal industry, highlighting the competitive position of the industry's major participants. The business model of Excite, Inc., and its major competitors are presented. In addition, the case looks at the new...
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Keywords:
Competitive Strategy;
Business Model;
Emerging Markets;
Transformation;
Market Entry and Exit;
Industry Structures;
Web Services Industry
Bradley, Stephen P., and Kelley Porter. "Excite, Inc.--1998." Harvard Business School Case 799-044, October 1998.
- December 1996 (Revised June 1998)
- Case
Midnight Networks, Inc.
By: H. Kent Bowen and Marilyn Matis
Midnight Networks, Inc., is a small computer network validation company. This case describes how the five founders built their business from operations earnings and how they established "best practices" operational processes to run their firm successfully. Operational...
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Keywords:
Corporate Entrepreneurship;
Business or Company Management;
Operations;
Organizational Culture;
Applications and Software;
Business Startups;
Business Growth and Maturation;
Information Technology Industry;
Massachusetts
Bowen, H. Kent, and Marilyn Matis. "Midnight Networks, Inc." Harvard Business School Case 697-019, December 1996. (Revised June 1998.)
- Research Summary
Crowdsourced reviews
By: Michael Luca
To determine whether online consumer reviews influence the way that reputation is formed, Professor Luca has combined reviews from the website Yelp.com with public restaurant data. He has shown that a one-star increase in Yelp ratings results in a 5- to 9-percent... View Details
- Research Summary
Overview
By: Isamar Troncoso
Professor Troncoso's research explores problems related to digital marketplaces and AI applications in marketing, and combines toolkits from econometrics, causal inference, and machine learning. She has studied how different platform design choices can lead to...
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- Research Summary
The limits of reviews
By: Michael Luca
Consumer reviews are an important source of information in the digital age. Yet there are limits to the role that reviews can play. In a case study, Professor Luca discusses the limits of reviews and how companies can create more comprehensive reputation systems... View Details