Thought many of you would find my latest visualizations of interest, exploring the geographic evolution of Twitter over the last three years, finding that it has largely expanded in-place in much of the world and that its growth has stalled, with new users predominately listening rather than contributing: http://www.theatlantic.com/international/archive/2015/08/twitter-global-soci... This high-resolution zoomable map shows the footprint of all geotagged tweets in the Streaming API over the last three years: http://blog.gdeltproject.org/a-zoomable-map-of-the-twitterverse-2012-2014/ This is a high-resolution version of the animated map in the Atlantic piece that shows the footprint of regular Twitter use by month January 2012 to December 2014, as seen through the Streaming API: http://data.gdeltproject.org/blog/twittervis-mastermap-2012-2014/animation-2... In particular, given how much analysis of Twitter and social media in general these days is facilitated through bulk data mining, I thought many of you would find the discussion towards the end of the article about the shift away from the global town square and towards more controlled distribution of content, with private and ephemeral communications taking over, as well as the shift towards image and video content that cannot be as robustly machine processed, of considerable interest in the implications for the future role of social media in social-scale exploration. ~Kalev http://blog.gdeltproject.org/ http://kalevleetaru.com/