Google has launched the new search option yesterday at searchology ..
this will come in to the picture once the normal web search completed ..
You will find a new search option once your search is completed .and you clicking on this menu you will got a left side bar ..
you can rectify your search more with the help of this search option
catch the full story here
http://www.ideazpod.com/2009/05/13/google-unveils-new-search-options/
Turning over control to the user is important. We have those discussions with the development of our own site. Enhance the visitor's experience by letting them take control over how the site operates.
It's good approach but overall the success depends on how google balance between freshness and quality search results.
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