Official Google Blog: "Since we first introduced real-time search last December, we’ve added content from MySpace, Facebook and Buzz, expanded to 40 languages and added a top links feature to help you find the most relevant content shared on updates services like Twitter. Today, we’re introducing a new feature to help you search and explore the public archive of tweets. With the advent of blogs and micro-blogs, there’s a constant online conversation about breaking news, people and places — some famous and some local. Tweets and other short-form updates create a history of commentary that can provide valuable insights into what’s happened and how people have reacted. We want to give you a way to search across this information and make it useful. Starting today, you can zoom to any point in time and “replay” what people were saying publicly about a topic on Twitter. To try it out, click “Show options” on the search results page, then select “Updates.” The first page will show you the familiar latest and greatest short-form updates from a comprehensive set of sources, but now there’s a new chart at the top. In that chart, you can select the year, month or day, or click any point to view the tweets from that specific time period."