This feature is a Keyboard lovers delight. Now you can navigate the Google's search results using Up-Down arrow keys. You might have observed a cute little blue colored arrow marking a search result. If not yet! then please find it now. If you see this arrow you can use Up and Down arrow keys to navigate through the search result and press enter to open a particular selection. Cool isn't it! and also better than the usual tab thingy.
If you do not see this arrow then you might need to press tab one or two times and then the up arrow get it back.
Happy Googling :)
They ask me, what if Google was NOT there? I say, there should have been something else from the "The Hitchhikers Guide to the Galaxy" :)