If a monopoly gives away free services is it a problem?

FT, here. 

Economists calculate the true value of Facebook to its users in new study

ArsTechnica, here. 

AN INTRODUCTION TO THE COMPETITION LAW AND ECONOMICS OF “FREE”

B.Edelman, D. Geradin, here.

Are US antitrust regulators giving Silicon Valley’s ‘free’ apps a free pass?

J. Newman, here.

Neue Waffen gegen Google, Facebook und Co

FAZ, hier.
Referentenentwurf hier.

The Hidden Costs of Free Goods: Implications for Antitrust Enforcement

M. Gal, D. Rubinfeld, here.

Here's why Amazon Prime can afford to raise prices

TheVerge.com, here.

Profiting from Free: The Scourge of Online Piracy and How Industry Can Help

A. Keen, sponsored by the Initiative for a Competitive Online Marketplace (ICOMP), here (pdf file).

HUNTING THE WILD GEESE: COMPETITION ANALYSIS IN A WORLD OF “FREE”

F. Polverino, here. 

The Antitrust Economics of Free

D. Evans, here. 

The Complete Guide To Freemium Business Models

U. Shmilovici, Techcrunch, here.