Search engines are important access channels to news content of traditional newspapers with Google alone responsible for 35% of online visits to news outlets in the European Union. Yet, the effects of Google Search on market competition and information diversity have received scant attention....

Measuring media concentration has always been a difficult task and results were never satisfactory. The convergence of media, telecommunications and information technologies adds a new dimension to this problem as it results in changing market structures, exacerbating among other things the...