For those studying Twitter, I just released an update to my 2012-2018 Twitter overview, bringing it up to September 2019 now. One interesting shift is that from Nov 2018 to March 2019, the total daily Twitter volume increased around 20 million tweets a day, reversing its 6-year decline. Roughly 10% of all tweets each day are still either by verified users or retweets of verified tweets. Retweet volume has remained steady at 50% of total Twitter volume since Jan. 2018. Replies have been trending up since July 2017, hitting around 25% of total volume, though decreasing sharply over the last few months. Tweets mentioning other users have reached 75%. Tweets containing a URL of any kind have remained stable at 40% since July 2018. Average tweet size in characters has decreased slightly, with both chars and bytes (for multibyte characters) decreasing since June 2018. English continues to decline as a percentage of the Twitterverse. Average account age from registration continues to grow, though median age has leveled off as of July 2018. For those mapping Twitter, the percentage of tweets with GPS coordinates (rather than city/landmark-centroid coordinates) continues to plunge - as of September less than 0.08% of tweets were GPS-tagged, compared with around 1.2% of tweets having a Place centroid (down from 3.5% combined seven years ago). For those text mining Twitter, the total size of non-RT textual content (excluding user references and hyperlinks) has continued to decline, reaching around 11GB of text posted to Twitter each day in September 2019 - slightly less than was posted daily seven years ago in January 2012. https://blog.gdeltproject.org/visualizing-eight-years-of-twitters-evolution-... Kalev