Now Google’s real-time search results include (as listed by Danny Sullivan) Facebook, MySpace, Twiter, Google Buzz, FriendFeed, Jaiku, Identi.ca, TwitArmy, Google News links, Google Blog Search links, new web pages, and freshly updated pages. At this point, Google generally only shows the real-time results for newsy/trending topics.
http://www.webpronews.com/topnews/2010/02/25/your-facebook-page-is-in-googles-real-time-results-now