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- All HBS Web
(2,079)
- People (3)
- News (444)
- Research (1,222)
- Events (19)
- Multimedia (14)
- Faculty Publications (644)
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- 02 Apr 2012
- Research & Ideas
Do Online Dating Platforms Help Those Who Need Them Most?
identify potential partners in the offline world, and the online worlds are helping them do that, thereby potentially equalizing access to romantic relationships.” Harvard Business School Associate Professor Mikolaj Piskorski has studied... View Details
- June 2002 (Revised September 2005)
- Case
Online Music Distribution in a Post-Napster World
By: Youngme E. Moon
Provides a description of the rise and decline of Napster, the free Internet music-swapping service. Also describes second-generation peer-to-peer services (e.g., Gnutella) as well as paid subscription services (e.g., MusicNet, pressplay). View Details
Keywords: Distribution; Internet and the Web; Price; Marketing Channels; Service Operations; Music Industry
Moon, Youngme E. "Online Music Distribution in a Post-Napster World." Harvard Business School Case 502-093, June 2002. (Revised September 2005.)
- June 2010
- Article
The Pathologies of Online Display Advertising Marketplaces
By: Benjamin Edelman
Display advertising marketplaces place "banner" ads on all manner of popular sites. While these services are widely used, they suffer significant challenges, including weak user response and low accountability for both advertisers and web site publishers. I survey a... View Details
Keywords: Misleading and Fraudulent Advertising; Online Advertising; Cost; Corporate Accountability; Information Publishing; Consumer Behavior; Relationships; Web Sites
Edelman, Benjamin. "The Pathologies of Online Display Advertising Marketplaces." Art. 2. ACM SIGecom Exchanges (June 2010).
- January 2021 (Revised March 2022)
- Case
Arçelik: From a Dealer Network to an Omnichannel Experience
By: Ayelet Israeli and Fares Khrais
Arçelik Turkey, the country’s market leader in household appliances, was at an omnichannel crossroads in January 2020. Arçelik was a B2B player utilizing a dealership network with an umbrella of brands and had one of the largest brick-and-mortar store networks in... View Details
Keywords: Digital Marketing; Bricks And Mortar; Franchise Management; Franchising; Dealer Network; Dealers; B2B; B2B2C; Tradition; Culture Change; Cultural Adaptation; Omnichannel; Omnichannel Retail; Omni-channel; Omnichannel Retailing; Sales Channels; Sales Channel Development; Channel Management; Channels Of Distribution; Marketplace; Platforms; Collaboration; Online Channel; Online Data; Online Sales; Online Shopping; Online; Retail; Retailing; Disruption; Transformation; Franchise Ownership; Change Management; Partners and Partnerships; Consumer Behavior; Sales; Internet and the Web; Marketing Strategy; Conflict and Resolution; Conflict Management; Organizational Culture; Distribution Channels; Digital Transformation; Digital Platforms; Electronics Industry; Retail Industry; Consumer Products Industry; Turkey
Israeli, Ayelet, and Fares Khrais. "Arçelik: From a Dealer Network to an Omnichannel Experience." Harvard Business School Case 521-067, January 2021. (Revised March 2022.)
- 2015
- Government Testimony
Price Coherence in Online Platforms — Impact and Responses
By: Benjamin Edelman and Julian Wright
We examine the role of price coherence in shaping market structure and offer policy recommendations to advance both efficiency and equity. View Details
Keywords: Price Coherence; Price Parity; MFN; Distribution Channels; Market Design; Travel Industry; Financial Services Industry
Edelman, Benjamin, and Julian Wright. "Price Coherence in Online Platforms — Impact and Responses." Government Testimony, October 2015 (For the House of Lords inquiry into Online Platforms and the EU Digital Single Market.)
- 06 Apr 2007
- What Do You Think?
Will Market Forces Stop Global Warming?
Summing Up Debate on this month's questions occurred on at least three levels. Is global warming occurring? Do humans (primarily through CO2 emissions) have much to do with it? Should we rely on market forces to provide appropriate responses, or will this require... View Details
- 26 May 2009
- Research & Ideas
Improving Market Research in a Recession
often be greater. Brand preferences and consumption levels in emerging markets such as China, India, and Brazil tend to be more fluid. Consumer research is therefore critical to aid marketers trying to... View Details
Keywords: by John Quelch
- June 2009
- Article
Highbrow Films Gather Dust: Time-inconsistent Preferences and Online DVD Rentals
By: Katherine L. Milkman, Todd Rogers and Max H. Bazerman
We report on a field study demonstrating systematic differences between the preferences people anticipate they will have over a series of options in the future and their subsequent revealed preferences over those options. Using a novel panel data set, we analyze the... View Details
Keywords: Decision Choices and Conditions; Forecasting and Prediction; Film Entertainment; Demand and Consumers; Renting or Rental; Power and Influence; Prejudice and Bias; Online Technology; Motion Pictures and Video Industry
Milkman, Katherine L., Todd Rogers, and Max H. Bazerman. "Highbrow Films Gather Dust: Time-inconsistent Preferences and Online DVD Rentals." Management Science 55, no. 6 (June 2009): 1047–1059.
- July 2023
- Article
So, Who Likes You? Evidence from a Randomized Field Experiment
By: Ravi Bapna, Edward McFowland III, Probal Mojumder, Jui Ramaprasad and Akhmed Umyarov
With one-third of marriages in the United States beginning online, online dating platforms have become important curators of the modern social fabric. Prior work on online dating has elicited two critical frictions in the heterosexual dating market. Women, governed by... View Details
Keywords: Online Dating; Internet and the Web; Analytics and Data Science; Gender; Emotions; Social and Collaborative Networks
Bapna, Ravi, Edward McFowland III, Probal Mojumder, Jui Ramaprasad, and Akhmed Umyarov. "So, Who Likes You? Evidence from a Randomized Field Experiment." Management Science 69, no. 7 (July 2023): 3939–3957.
- August 2009
- Article
Mental Accounting and Small Windfalls: Evidence from an Online Grocer
By: John Beshears and Katherine L. Milkman
We study the effect of small windfalls on consumer spending decisions by comparing the purchases online grocery customers make when redeeming $10-off coupons with the purchases they make without coupons. Controlling for customer fixed effects and other variables, we... View Details
Keywords: Mental Accounting; Windfalls; Marginal Propensity To Consume; Coupons; Marketing Communications; Consumer Behavior; Accounting; Cognition and Thinking; Retail Industry
Beshears, John, and Katherine L. Milkman. "Mental Accounting and Small Windfalls: Evidence from an Online Grocer." Journal of Economic Behavior & Organization 71, no. 2 (August 2009): 384–394.
- 2008
- Working Paper
Deterring Online Advertising Fraud Through Optimal Payment in Arrears
By: Benjamin Edelman
Online advertisers face substantial difficulty in selecting and supervising small advertising partners. Fraud can be well-hidden, and limited reputation systems reduce accountability. But partners are not paid until after their work is complete, and advertisers can... View Details
Keywords: Misleading and Fraudulent Advertising; Online Advertising; Profit; Corporate Accountability; Partners and Partnerships; Mathematical Methods
Edelman, Benjamin. "Deterring Online Advertising Fraud Through Optimal Payment in Arrears." Harvard Business School Working Paper, No. 08-072, February 2008. (Revised August 2008, October 2008, February 2009.)
- 2007
- Working Paper
Mental Accounting and Small Windfalls: Evidence from an Online Grocer
By: Katherine L. Milkman, John Beshears, Todd Rogers and Max H. Bazerman
We study the effect of small windfalls on consumer spending decisions by examining the purchasing behavior of a sample of online grocery shoppers over the course of a year. We compare the purchases customers make when redeeming a $10-off coupon they received from their... View Details
Keywords: Spending; Consumer Behavior; Mathematical Methods; Food and Beverage Industry; Retail Industry
Milkman, Katherine L., John Beshears, Todd Rogers, and Max H. Bazerman. "Mental Accounting and Small Windfalls: Evidence from an Online Grocer." Harvard Business School Working Paper, No. 08-024, September 2007. (Revised March 2008.)
- June 2014
- Supplement
Ad Classification at Right Media — slide supplement (widescreen)
By: Benjamin Edelman
Right Media considers systems and policies to make sure that ads are only shown on web sites where they are appropriate, and vice versa. Setting standards is particularly challenging given the large and growing marketplace, the numerous participants, their diverse... View Details
- June 2011
- Teaching Note
PatientsLikeMe: An Online Community of Patients (TN)
By: Sunil Gupta and Jason Riis
Teaching Note for 511093. View Details
- Winter 2019
- Article
From the Digital to the Physical: Federal Limitations on Regulating Online Marketplaces
By: Benjamin Edelman and Abbey Stemler
Online marketplaces have transformed how we shop, travel, and interact with the world. Yet, their unique innovations also present a panoply of challenges for communities and states. Surprisingly, federal laws are chief among those challenges despite the fact that... View Details
Keywords: Marketplaces; Peer To Peer; Sharing Economy; Decentralized; Regulation; Preemption; Markets; Internet; Government Legislation; Laws and Statutes; United States
Edelman, Benjamin, and Abbey Stemler. "From the Digital to the Physical: Federal Limitations on Regulating Online Marketplaces." Harvard Journal on Legislation 56, no. 1 (Winter 2019): 141–197.
- 2025
- Working Paper
Algorithmic Assortment Curation: An Empirical Study of Buybox in Online Marketplaces
By: Santiago Gallino, Nil Karacaoglu and Antonio Moreno
Most online sales worldwide take place in marketplaces that connect sellers and buyers. The presence of numerous third-party sellers leads to a proliferation of listings for each product, making it difficult for customers to choose between the available options. Online... View Details
Keywords: Algorithms; E-commerce; Sales; Digital Marketing; Internet and the Web; Customer Satisfaction
Gallino, Santiago, Nil Karacaoglu, and Antonio Moreno. "Algorithmic Assortment Curation: An Empirical Study of Buybox in Online Marketplaces." Working Paper, 2025.
- Other Article
Online Discounting: Who is Leading the Race to the Bottom?
By: Ayelet Israeli, Eric Anderson and Anne Coughlan
A short review of the finidings in: Israeli, Ayelet, Eric Anderson, and Anne Coughlan. "Minimum Advertised Pricing: Patterns of Violation in Competitive Retail Markets." Marketing Science 35, no. 4 (July–August 2016): 539–564. View Details
Keywords: Pricing; Price Policies; Pricing Policies; Discounting; Retailing; Retailing Industry; Minimum Advertised Price; Ecommerce; E-Commerce Strategy; Price; Distribution Channels; Distribution; Digital Marketing; E-commerce; Retail Industry; Technology Industry; Advertising Industry; United States
- July, 2024
- Article
Consumer Protection in an Online World: An Analysis of Occupational Licensing
By: Chiara Farronato, Andrey Fradkin, Bradley Larsen and Erik Brynjolfsson
We study the demand and supply implications of occupational licensing using transaction-level data from a large online platform for home improvement services. We find that demand is more responsive to a professional's reviews than to the professional's... View Details
Keywords: Occupational Licensing; Consumer Protection; Perception; Experience and Expertise; Public Opinion; Governing Rules, Regulations, and Reforms; Demand and Consumers
Farronato, Chiara, Andrey Fradkin, Bradley Larsen, and Erik Brynjolfsson. "Consumer Protection in an Online World: An Analysis of Occupational Licensing." American Economic Journal: Applied Economics 16, no. 3 (July, 2024): 549–579.
- Article
Why Online Ads Are Weathering the Recession
Rayport, Jeffrey F. "Why Online Ads Are Weathering the Recession." Bloomberg Businessweek Online (December 24, 2008).
- 2024
- Working Paper
Webmunk: A New Tool for Studying Online Behavior and Digital Platforms
By: Chiara Farronato, Andrey Fradkin and Chris Karr
Understanding the behavior of users online is important for researchers, policymakers, and private companies alike. But observing online behavior and conducting experiments is difficult without direct access to the user base and software of technology companies. We... View Details
Farronato, Chiara, Andrey Fradkin, and Chris Karr. "Webmunk: A New Tool for Studying Online Behavior and Digital Platforms." NBER Working Paper Series, No. 32694, July 2024.