I discovered this trick in Firefox trying to click on a link by indecisively choosing whether I wanted it in the same tab or a new. Apparently if you select some text, this may just be the clipboard but X has the nifty selection buffer, and click both the left and middle mouse buttons Firefox will wisk you off to the site or to the first item that Google returns if you've selected more than one word.
So it's a I'm feeling lucky salute. I think.
