If you don’t have a keyword bookmark for Google Search yet, you can start by making a bookmark to this link (right-click and choose bookmark this link), and name it something useful.

Now right-click the new link and choose Properties.

Here’s where you’ll want to add the keyword ? into the keyword box, to make it look like this. (If you already have a keyword bookmark for Google Search, then add in the URL above into the location box here.

Now when you search in the location bar using the ? keyword like this…

You’ll get sent to the new experimental keyword navigation results: 

 

I really should figure out why the google description for this site is so strange…

You can also install the google by keyword search plugin for Firefox or IE7.