If you use Mozilla Firefox and love twitter, here is something excellent for you.
Twitter has released the "Twitter Address Bar Search" add-on for Mozilla Firefox to make it easy to complete Twitter searches in Firefox. With Twitter Address Bar Search, users can discover richer and more relevant Twitter search results directly from the Firefox Awesome Bar (Address Bar).
The add-on makes searching Twitter in Firefox a snap. You can search for #hashtags and @usernames by entering the searches directly into the Firefox Awesome Bar, and you'll be taken to Twitter search results. Twitter Address Bar Search works with the latest version of Firefox for Windows, Mac OS X, Linux and even on Android.
You can download it using following link: