Google now enhanced his search feature called Google Instant Search. Google Instant is a new search enhancement feature that shows results as you type in the search box.

Google are pushing the limits of their technology and infrastructure to help you get better search results, faster.

Google key technical insight was that people type slowly, but read quickly, typically taking 300 ms between key  strokes, but only 30 ms to glance at another part of the page,  means that we are scan a results page while we type.

Now We  get to the right content much faster than before because we don’t have to finish typing our full search term, or even press “search.”

This Google Instant Search change does not impact the ranking of search results.

Benefits

• Faster Searches
• Smarter Predictions
• Instant Results

For your Information,

• Before Google Instant, the typical searcher took more than 9 seconds to enter a search term, and we saw many examples of searches that took 30-90 seconds to type.
• Using Google Instant can save 2-5 seconds per search.
• If everyone uses Google Instant globally, we estimate this will save more than 3.5 billion seconds a day. That’s 11 hours saved every second.
• 15 new technologies contribute to Google Instant functionality.

Google Instant Availability :

Google Instant is starting to roll-out to users on Google domains in the US, UK, France, Germany, Italy, Spain and Russia who use the following browsers: Chrome v5/6, Firefox v3, Safari v5 for Mac and Internet Explorer v8.

( Source : Check out Here – Google Instant Search )