Google may be tuning its search engine. Although the current search results is fast, Google seems not satisfy. Based on the video, it seems that it might introduce live results during search. You will not need to press enter to see the results.
This is not something new. On some Google products like Google Maps on mobile phone (WinMo), I can see that it is already doing a live search. However, to do it on a large search on a search engine, it is interesting. The results keep coming in while you type and redefine your search. Watch this video.
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