Not the Ghost of Christmas Past but the Ghost of Tweetmas Past. Yes, here’s a new horror to give the social media and ediscovery worlds a few sleepless nights: Twitter has just announced that it is building an index that will make it possible to search for EVERY tweet ever published since Twitter first went live in 2006. That’s going to be several hundred billion tweets. You can read the full story here on the Twitter official engineering blog https://blog.twitter.com/2014/building-a-complete-tweet-index