I don't envy the person who has to do a make-over for flickr. It works pretty well as it is (from a design perspective), and it feels as if it's hardened into concrete over the years of passivity, which makes it harder to argue that flickr needs to evolve its design like regular websites.

But Yahoo! can blame it all on themselves. How about they make sign-in and registration less of a pain in the ass for people with no interest in Yahoo! accounts.