Website of Katja Mayer. https://homepage.univie.ac.at/katja.mayer
Under construction, more back online soon

Meanwhile:
TU Munich Computational Social Science and Big Data
ZSI Centre for Social Innovation Vienna
Europen Commission Mutual Learning Exercise (Policy Support Facility) on Open Science
Wikimedia Fellowship Open Science
Special Issue - Call for Papers: Citizen Social Science: Active Citizenship vs. Data Commodification
ICWSM 2019 at TUM, open call for submission
Zenodo
Twitter

Events:
I am responsible for content in my own tweets, trackers and other annoying third party stuff are Twitter's responsibility