Paste and Go on Firefox 4
Opera and Google Chrome has implemented useful feature, Paste and Go. With this feature you can do paste url or keywords on address bar and automatic go to the address with single click. You don't need to click paste then press Go button or Enter keypad on your keyword. Fortunately Firefox 4 has already support this feature too.
It means you don't need install additional add-ons to use this feature like on Firefox 3.xx