Today I got tired of using my mouse when navigating in Google search results, so I started to search for Google keyboard shortcuts. I found some tools that added this to Firefox, but I just couldn't believe there weren’t existing in Google already. And then I found something at Google Experimental Labs. By clicking you convert your Google search to be keyboard sensitive. Nice! Here's how it looks after I've "Joined the experiment":

Here are the available shortcuts:

Key	Action
J	Selects the next result.
K	Selects the previous result.
O	Opens the selected result.
<Enter>	Opens the selected result.
/	Puts the cursor in the search box.
<Esc>	Removes the cursor from the search box.