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  • 2013
  • Working Paper

Competing Ad Auctions

By: Itai Ashlagi, Benjamin Edelman and Hoan Soo Lee
We present a two-stage model of competing ad auctions. Search engines attract users via Cournot-style competition. Meanwhile, each advertiser must pay a participation cost to use each ad platform, and advertiser entry strategies are derived using symmetric Bayes-Nash... View Details
Keywords: Online Advertising; Auctions; Market Participation; Market Platforms; Mathematical Methods; Competition
Related
  • November 2016 (Revised March 2017)
  • Case

Three Problems in Protecting Competition

By: Benjamin Edelman and Lena Goldberg
In three mini-cases, readers see a range of disputes in competition law—and apply legal principles to assure fair competition. View Details
Keywords: Law; Competition; Fairness
Related
  • July 2015
  • Supplement

Resuscitating Monitter — slide supplement

By: Benjamin Edelman and Wei Sun
Related
  • August 2014 (Revised March 2015)
  • Case

Reinventing Retail: ShopRunner's Network Bet

By: Benjamin Edelman and Karen Webster
ShopRunner considers adjustments to improve its online shopping service which offers no-charge two-day shipping as well as easy returns and other conveniences. Competitors' diverse pricing models and ancillary benefits raise questions about how to structure and price... View Details
Keywords: Shopping Club; Coop; Pricing; Shipping; Marketing Channels; Global Strategy; Order Taking and Fulfillment; Information Technology Industry; Retail Industry; United States; China
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  • January 2010 (Revised February 2015)
  • Teaching Note

eBay Partner Network (A), (B), (C), and (D)

By: Benjamin Edelman and Ian Larkin
Teaching Note for [910008], [910009], [910012], and [914016]. View Details
Keywords: Internet and the Web; Networks; Information Technology Industry
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  • September 2009 (Revised March 2015)
  • Supplement

eBay Partner Network (C)

By: Benjamin Edelman and Ian Larkin
Supplements the (A) case. View Details
Keywords: Internet and the Web; Networks
Related
  • September 2009 (Revised March 2015)
  • Supplement

eBay Partner Network (B)

By: Benjamin Edelman and Ian Larkin
Supplements the (A) case. View Details
Keywords: Internet and the Web; Networks
Related
  • August 2008 (Revised May 2009)
  • Case

Consumer Payment Systems — Japan

By: Benjamin Edelman and Andrei Hagiu
In 2008, the Japanese consumer payments landscape featured ongoing widespread use of cash, limited use of credit cards and rapid rise of e-money systems based on contactless technology embedded in cards and especially mobile phones. The case details the alliances that... View Details
Keywords: Personal Finance; Governing Rules, Regulations, and Reforms; Digital Platforms; Alliances; Competitive Strategy; Information Infrastructure; Mobile and Wireless Technology; Japan
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  • January 2008 (Revised February 2010)
  • Case

Microsoft adCenter

By: Peter Coles and Benjamin Edelman
Microsoft considers alternatives to expand its presence in online advertising, especially text-based pay-per-click advertising. Google dominates, and it is unclear how Microsoft can grow, despite considerable technical and financial resources. Microsoft considers a set... View Details
Keywords: Digital Marketing; Growth and Development Strategy; Competition; Advertising Industry
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  • July 2019 (Revised April 2021)
  • Case

Salary Finance

By: John R. Wells and Benjamin Weinstock
In April 2019, Asesh Sarkar, co-founder and chief executive of Salary Finance Limited, a London-based FinTech, faced tough choices. Sarkar had founded Salary Finance with Dan Cobley and Daniel Shakhani in 2015. The company’s value proposition was quite simple: partner... View Details
Keywords: Credit; Financing and Loans; Wages; Innovation and Invention; Expansion; Growth and Development Strategy; Organizational Culture; Decision Choices and Conditions; Financial Services Industry
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  • November 2014
  • Teaching Note

Google Inc. in 2014 and Google Inc. in 2014 (Abridged)

By: Benjamin Edelman and Thomas R. Eisenmann
Supplements 915004 and 915005 View Details
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  • 2010
  • Working Paper

Advertising Disclosures: Measuring Labeling Alternatives in Internet Search Engines

By: Benjamin Edelman and Duncan S. Gilchrist
In an online experiment, we measure users' interactions with search engines, both in standard configurations and in modified versions with clearer labels identifying search engine advertisements. In particular, for a random subset of users, we change "Sponsored links"... View Details
Keywords: Online Advertising; Interactive Communication; Corporate Disclosure; Labels; Marketing Strategy; Consumer Behavior; Internet; Search Technology
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  • April 2008 (Revised February 2010)
  • Teaching Note

Microsoft adCenter

By: Peter A. Coles and Benjamin Edelman
Teaching Note for [908049]. View Details
Keywords: Technology; Advertising; Software; Information Technology Industry
Related
  • August 2019
  • Case

The Allstate Corporation, 2019

By: John R. Wells and Benjamin Weinstock
In July 2019, Allstate, the United States’ number-three property and casualty (P/C) insurer, released its second-quarter earnings, which reported first-half revenues of $22.1 billion, up 11.4% year-over-year. Shareholders cheered the top-line growth, but P/C premiums... View Details
Keywords: Insurance Companies; Strategic Analysis; Strategic Change; Insurance; Strategy; Strategic Planning; Organizational Change and Adaptation; Competitive Strategy; Insurance Industry; North America
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  • 10 Mar 2009
  • First Look

First Look: March 10, 2009

SSRN Download Counts? Authors: Benjamin Edelman and Ian Larkin Abstract We use a unique database of every SSRN paper download over the course of seven years, along with detailed resume data on a random... View Details
Keywords: Martha Lagace
  • 26 Jan 2010
  • First Look

First Look: Jan. 26

  Working PapersCompeting Ad Auctions: Multi-homing and Participation Costs Authors:Itai Ashlagi, Benjamin Edelman, and Hoan Soo Lee Abstract We model competing auctions for online advertising, with attention to the participation costs... View Details
Keywords: Martha Lagace
  • 07 Apr 2015
  • First Look

First Look: April 7

many users but also multiple types of users. For example, it's not enough that many customers want to book taxis by smartphone. Drivers must also be willing to accept smartphone bookings. Harvard Business School professor Ben View Details
Keywords: Sean Silverthorne
  • 08 Mar 2011
  • First Look

First Look: March 8

shareholder value in concentrated industries. By contrast, non-delay provisions have an unambiguously negative relation with value, and more so in concentrated industries. Overall, our analysis suggests that there are governance... View Details
Keywords: Sean Silverthorne
  • 09 Sep 2009
  • First Look

First Look: September 9

hospital, we find support for our hypotheses. Our findings suggest that frontline workers' participation in problem solving is motivated by some inherent characteristics of the problems as well as by... View Details
Keywords: Martha Lagace
  • 12 Jan 2018
  • Cold Call Podcast

Leadership Lessons from a Young Martin Luther King, Jr.

gotten a death threat on his phone, using the N word, telling him to get out of town. He says he gets about 30 or 40 death threats a day in those days. So, it was a very, very rough time in Montgomery, Alabama. I went to Georgia Tech in the early 60s, and it was a... View Details

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