I just wanted share our new article on the network ROI as it may be of interest to some people on this list. In nutshell, in this study we tried to calculate the network effect of a Facebook "like" button and how can it impact a product's sale. https://www.emerald.com/insight/content/doi/10.1108/INTR-07-2018-0346/full/h... Let me know if you need a personal copy to read. Thanks, Gohar -- Dr. Gohar Khan | Senior Lecturer of Digital Business | Undergraduate and Graduate Convenor for Digital Business | School of Management & Marketing | Faculty of Management | University of Waikato Private Bag 3105 | Hamilton 3240 | New Zealand | +64 7 838 4233 | gohar.khan@waikato.ac.nz | office: MSB.2.32D / Web: gfkhan.wordpress.com Check out my books on social media analytics and digital marketing analytics