1) The document discusses trending topics on Twitter from 2012, including the Queen's Diamond Jubilee which generated over 1 million tweets, Steve Jobs' death which resulted in 20% of tweets being about him and Twitter crashing, and the London Olympics where 150 million tweets were sent. 2) It also mentions Felix Baumgartner's record-breaking skydive from space which was mentioned in over 700,000 tweets, and Barack Obama's reelection in 2012 which led to his "FOUR MORE YEARS" tweet being retweeted 800,000 times, making it the most popular tweet in history. 3) The document provides statistics on Twitter usage such as it having over 500 million users who send