definition : simplified web.
Google has launched "Instant Search". The new way of searching web fast...faster. As per its product page google says you can save 2-5 seconds per search. With Instant you can search web faster, well predicted and get instant results this means its ajax(again best use of AJAX by Google).
Overview :
With Google Instant you can get results as you type. 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. You can now adapt your search on the fly until the results match exactly what you want. In time, we may wonder how search ever worked in any other way.
Keep Googling(FASTER)