Browser bug or did Yahoo! just acquire Technorati?

Either I just encountered a very strange browser bug, or Yahoo has just acquired Technorati. Just moments ago, while viewing the Technorati search results for Between the Lines,  I clicked through to this link about Dan Farber's interview with Dave Winer.  But when I hit the back button, I got an apology that was clearly generated by Yahoo!'s servers telling me that the page couldn't be found on Yahoo!'s servers.  The tab's title in Firefox (inserted below) also showed the Technorati logo along with the text "Yahoo! - 404 Not Found." I was not able to repeat the error.  Is this some crazy browser bug.  Or, did I miss the big news?

Update: Earlier this year (January), Mike Arrington asked When will Yahoo acquire Technorati.

Second Update: Here's a link to the complete screen shot.