Abstract
The article investigates whether there is a need for legislative action in social networks—which are similar to broadcasting—to ensure that diversity of opinion can be sufficiently expressed to protect freedom of opinion-forming. The investigation focuses on Facebook because it has the largest number of registered users worldwide and is thus the network with the greatest reach. First and foremost, it will be debated whether social networks have a power of opinion comparable to broadcasting. Based on this foundation, it is possible to assess the extent to which diversity of opinion is expressed in social networks and the extent to which freedom to form opinions is actually under threat.