Google Instant Search

Google is set to make several major announcements related to making Google's search engine faster and more dynamic. This week Google released Google Instant Search, which displays live search results as soon as you begin typing. By providing results before a query is complete and removing the need to hit the "enter" key, Google claims users will save two to five seconds per search.

http://www.google.com/instant/

Find More - http://www.livestreamsblog.com/2010/09/10/google-instant-search/