Didn't know how to phrase my question but I'll try to explain it here.
Have you seen how you can start typing a website URL in chrome's then hit [TAB] and then chrome's URL bar will jump into a searchy status?
For example, type 'facebook.com' in your address bar, then hit [TAB]. what you type in now will be searched for inside facebook.
What does facebook have to have for it to work?