Is this any more useful than a normal web search? Google Search (with Instant Search enabled) has had keyboard navigation for a long time. After you hit enter

Is this any more useful than a normal web search? Google Search (with Instant Search enabled) has had keyboard navigation for a long time. After you hit enter on a search, hit tab and you can navigate the results with your arrow keys. And when you go to Google's homepage your cursor is automatically placed in the Search box, so you can search Google with only a keyboard.