Search Keys extension for Firefox
I came across a nice extension for firefox. Its the “Search keys” extension which allows you to select search results without using the mouse or the touchpad. Every search result comes in with a number suffixed beside it. You just have to hit the respective key on the keyboard and off you go into the link. Using Ctrl + that number opens the link in a new tab. Coolness! Just what I want to reduce further my usage of mouse which is already diminishing greatly. 
Find the extension at