RT @WolfieChristl@twitter.com
Very interesting stuff in the leaked Facebook documents, indeed.
See e.g. from page 1561:
https://dataviz.nbcnews.com/projects/20191104-facebook-leaked-documents/assets/facebook-sealed-exhibits.pdf
For example, Facebook did actually analyze "call log data (e.g. duration/frequency/recency of incoming/outgoing calls/texts)" and use it for friend suggestions.
??: https://twitter.com/WolfieChristl/status/1193990979721793537