Google today unveiled Google Realtime Search, a new search interface for real-time results from social media tools such as Twitter, Facebook, Buzz, blogs and elsewhere. (That link may not yet work for everyone. If it doesn’t, use this link to the development page.)
Once you enter your search query, results continue to be updated in real time. Also, Google Realtime includes several features for refining your search results. For one, you can view results by a specific location. For example, you can see what people in a particular city are saying about President Obama.
You can also refine results by times and dates. When you find a thread or conversation from the past, you can replay it in its entirety.
You can read more about it and see an introductory at the Official Google Blog.