I actually think Chrome actually has a superior search interface. You start typing the keywords for the site, then hit tab and you'll be using the search for that site. It also picks them up automatically when you visit the site. I've also found it bad that firefox needs an extension to search an alternate site without changing the default.
Firefox offers the same keyword search from the address bar - you just have to define them in 'Manage Search Engines' (accessible from the drop down in the search bar). Defining Wikipedia as 'wp', YouTube as 'yt' etc, make searching much easier than using the search box.
