When typing a search query with Google Instant, results appear after the first letter is entered, and they update as the user types. Marissa Mayer, Google's vice president of search and user experience, said results are actually delivered "before you type," because Google Instant predicts and automatically completes search terms.
According to Google, a typical searcher spends nine seconds entering a query, and 15 seconds searching for answers. Google hopes to shave two to five seconds per search using Google Instant.
According to Google,
The most obvious change is that you get to the right content much faster than before because you don’t have to finish typing your full search term, or even press “search.” Another shift is that seeing results as you type helps you formulate a better search term by providing instant feedback.On the first look it would be beneficial. Some noteworthy advantages would be:
- Faster Searches: By predicting your search and showing results before you finish typing, Google Instant can save 2-5 seconds per search.
- Smarter Predictions: Even when you don’t know exactly what you’re looking for, predictions help guide your search. The top prediction is shown in grey text directly in the search box, so you can stop typing as soon as you see what you need.
- Instant Results: Start typing and results appear right before your eyes. Until now, you had to type a full search term, hit return, and hope for the right results. Now results appear instantly as you type, helping you see where you’re headed, every step of the way.
If you prefer to use the classic version of Google, click the link next to Google’s search box that says -- “Instant is on” and turn it off. If you are a slow web connection, Google will automatically turn off Google Instant for you.
Google Instant works on Firefox 3+, Safari 5+, IE 8 and Google Chrome 5+. It is currently enabled only for desktops but Google says a mobile version is coming soon.
P.S. 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. Please note, users on domains other than Google.com can only access Google Instant if they are signed in to a Google Account. We will continue to add new domains and languages over the next several months.
P.P.S. For anyone who wants to use it, but is not able to as its not available in their country, just go to Google.com and search it from there..!!!