Great line-up in the special issue of JEMS! We managed to get Joel Waldfogel, Tim Bresnahan, Joshua Gans, Avi Goldfarb, @k_mcelheran, Erik Brynjolfsson and many other awesome authors in the same issue!

The 5th seminar of the Centre for Competition Economics on Conglomerate and Ecosystems Theories of Harm takes place tomorrow at 3pm CEST. I will present work w/ Pauline Affeldt on big tech acquisitions in the app ecosystem, including new results on Google/Fitbit & Facebook/Giphy.

Finally out, with Luis Aguiar Jonas Hannane @hannes_ullrich Christian Peukert Returns to Data: Evidence from Web Tracking diw.de/documents/publ… #Webtracking data are essential for consumer profiling that enables targeted advertising & content delivery. 1/6

New paper: We study the effects of the global rollout of robots and AI in a major logistics company (with Erdem Dogukan Yılmaz). The link to the paper is below.

Spotify uses playlists to gain advantage with their suppliers, from Luis Aguiar, Joel Waldfogel, and Axel Zeijen nber.org/papers/w33048

Super interesting paper. Goes against my prior that Spotify playlists were just the new payola from the golden days of radio.

Female content creators on YouTube received significantly more negative feedback for comparable content. But the removal of public display of dislikes eliminated this gender gap and persistently increased female creator productivity and consumer demand.

📢Call for papers for the UC3M Economics PhD Alumni Conference that will be held on June 5-6, 2025 in Getafe. Join us to celebrate the 35th Anniversary of the UC3M Economics PhD! UC3M Econ PhD graduates can submit papers by February 15 editorialexpress.com/conference/uc3… More info 👇

With differentiated products and heterogeneous consumers, it may be hard for choices to deliver maximal welfare. We might regret choices we make, and we might miss out on products we would have enjoyed. Imke Reimers and Christoph Riedl explore this nber.org/papers/w33401

aka "The deadweight loss of consumption." Joel Waldfogel already did it for Christmas. Now, the three of us are doing for the rest of the year.