We empirically investigate the platform competition in the online daily deals promotion market that is characterized by intense rivalry between two leading promotion sites, Groupon and LivingSocial, that broker between merchants and consumers. We find that deals offered through Groupon, the...

Efficient access to existing knowledge is essential to technical advance, yet little is known about how access-enhancing institutions shape intertemporal knowledge spillovers. In this paper, I investigate the cumulative technological impact of the CNIDR AIDS Database, the first,...

Annäherung an das Thema -- Vorteilsmanagement in elektronischen Märkten -- Innovative Markteintrittsstrategien in Wissenschaft und Forschung -- Die strategische Ausgangssituation des Innovators im elektronischen Markt -- Strategische Ziele und erfolgsrelevante Maßnamen eines innovativen...

Dominant or apparently dominant internet platform increasingly become subject to both antitrust investigations and further-reaching political calls for regulation. While Google is currently in the focus of the discussion, the next candidate is already on the horizon - the ubiquitous online...

This paper follows two objectives: (i) It demonstrates the merits of the survey based approach to B2C eCommerce characteristics and company strategy, and (ii) it presents empirical evidence of the crucial importance of size and marketing investment in B2C eCommerce markets. It presents...

Online marketplace designers frequently run A/B tests to measure the impact of proposed product changes. However, given that marketplaces are inherently connected, total average treatment effect estimates obtained through Bernoulli randomized experiments are often biased due to violations of the...

Many internet firms use A/B tests to make product decisions. In an A/B test, the typical objective is to measure the total average treatment effect (TATE), which measures the difference between the average outcome if all users were treated and the average outcome if all users were untreated....