This article analyses a hierarchical structure of academia within two academic social media networking sites, i.e. Academia.edu and ResearchGate. In this study, I investigate profiles (in these two services) of all academic staff members of Adam Mickiewicz University in Poznań (N = 2661). I use the concept of prestige to analyse whether the hierarchical structure of academia is being reproduced in analysed services. Since prestige is an unobservable construct, I use two indicators to measure it: the number of followers and the number of views. My findings show that the hierarchical structure differs between Academia.edu and Research- Gate. While the structure of ResearchGate is explicitly hierarchical in reference to degrees of the researchers (a higher degree is related to a higher value of the prestige indicators), the structure of Academia.edu resembles a reversed pyramid (a higher degree is related to a lower value of the prestige indicators). The article concludes with a discussion concerning possible causes of differences between services in terms of reproducing the hierarchical structure. Moreover, I provide potential implications of the results as well as the justification of the necessity of using the concept of prestige to determine hierarchical structure of academia.

Yearbooks of international law are publications common to many countries. The present contribution aims at presenting the argument that the yearbooks in the Visegrád countries play an extremely important role for the national academia and its identity and visibility in the globalized world. The argument is justified by an excursion to the common history of the academia in these countries, in particular during the years of communist régime and the transformation in the 1990s. The lack of specialized journals and other publications on international law in English, together with the internal and external stress on publication activities, makes them very precious.