To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!Close
Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
Rated 5 out of 5 stars
Since I couldn't add this to my Firefox via "Manage Search Engines"..."Sorry, you need a Mozilla-based browser (such as Firefox) to install a search plugin.", I made it my default SE from the address bar and removed the searchbar from my browser.
imho it's better to do your searches from the address bar anyway.