Facebook debuted its new real-time search today. This new feature is almost certainly aimed at competing with Twitter, giving Facebook users the option of searching the past 30 days of status updates, photos, videos, notes and links posted by their friends. Of course, the new search tool also still includes profiles, pages, applications, groups and web search, interestingly enough powered by Bing.
In addition, the search feature will display all public status updates and profiles. Don’t want your updates to be public?

Edit your privacy settings by clicking on Settings in the top right corner by the search box, then click Privacy Settings. From this page you can navigate and edit your Profile, Search, News Feed and Wall, and Application privacy settings.