For the past two weeks I’ve used DuckDuckGo as my search engine. It’s a search engine built on open-source software. What made me switch is the capacity to navigate through search results with the keyboard using vi-like keys (hjkl).
I didn’t know at the time but Google also allows you do something similar. You just need to go to http://www.google.ca/experimental/ (also works for google.com and I guess most other domains). There you can opt-in to be part of the Keyboard shortcuts experiment. That’s it! J/K are used to navigate through search results, O (or enter) to open them.
Hopefully this is going to be useful for the other keyboard junkies out there.