An important consideration is that just the graph of who talks to whom can be quite powerful: https://kieranhealy.org/blog/archives/2013/06/09/using-metadata-t

An important consideration is that just the graph of who talks to whom can be quite powerful: https://kieranhealy.org/blog/archives/2013/06/09/using-metadata-to-find-paul-revere/ https://kieranhealy.org/blog/archives/2013/06/09/using-metad...