Øystein Foros and Erling J. Hjelmeng: If the collaboration has resulted in higher prices, the customers can claim compensation.

The article "Endogenous Multihoming and Network Effects: PlayStation, Xbox, or Both?" has been published in Management Science.

Øystein Foros and Erling J. Hjelmeng: There is presumably an extra good atmosphere at the publishers' Christmas tables, while there is a critical evaluation of their own misjudgments that is on the menu at the Competition Authority.

The forthcoming Book Law will presumably increase the proportion of the English-language syllabus, also where students and lecturers prefer new Norwegian literature.

Øystein Foros and Frode Steen: Food prices skyrocket in February and July. It is normal, but the jumps were extra large last year.

Øystein Foros and Erling J. Hjelmeng: The Norwegian Competition Authority speaks loudly against politicians' proposals for new rules on price differences in the grocery industry. But again, politicians seem more balanced and curious than the competition authorities.

Øystein Foros and Erling J. Hjelmeng: The Bar Association is organizing a boycott of the Supreme Court. With that, it can itself come into conflict with the law - the competition law. The Supreme Court of the United States has stamped a similar boycott as an cartel business.

Øystein Foros: This will only change if the price difference becomes so big that ecological-conscious customers stop buying ecological.

Øystein Foros and Erling J. Hjelmeng: UEFA's Sopranos-like methods to stop the new competitor goes against the competition rules of the European Union.

Øystein Foros and Hans Jarle Kind: Small players should reconsider before they cheer the fight against the giants.

Erling J. Hjelmeng, Hans Jarle Kind and Øystein Foros: Increased competition and innovation will contribute to higher income and secure employment for milk farmers.

Øystein Foros and Hans Jarle Kind: The largest chain store does not automatically get a better purchasing price. It is a big blow for Tine to lose Norgesgruppen as a customer, but it will also cost Norgesgruppen dearly to find an alternative.