Flickr logos fall from Heaven

I was using Firefox searching something with Google today, and suddenly I found many flickr logos falling down like snow from Heaven. When I put my mouse hovering over the logo, a picture was showed. And there was a close button and a lock button. It might be a function of Cooliris Previews or, I'm living in China and have installed Access Flickr. I don't know what truly happened. All I want to say is GREAT!!