On social media algorithms for content promotion, accounting for users preferences, might limit the exposure to unsolicited contents. In this work, we study how the same contents (videos) are consumed on different platforms -- i.e. Facebook and YouTube -- over a sample of 12M of users. Our findings show that the same content lead to the formation of echo chambers, irrespective of the online social network and thus of the algorithm for content promotion. Finally, we show that the users' commenting patterns are accurate early predictors for the formation of echo-chambers.
@article{arxiv.1604.02705,
title = {Users Polarization on Facebook and Youtube},
author = {Alessandro Bessi and Fabiana Zollo and Michela Del Vicario and Michelangelo Puliga and Antonio Scala and Guido Caldarelli and Brian Uzzi and Walter Quattrociocchi},
journal= {arXiv preprint arXiv:1604.02705},
year = {2016}
}