Is this new?
http://static.flickr.com/53/109865718_56d25a4e42_o.png
It's interesting because google usually doesn't have the newest pages indexed. I assume this is done with RSS feeds, in which case it also ensures that the link is a permalink (there's nothing more annoying than clicking on a result only to find that it's a blog and the story isn't on the main page)

So I would just guess Google was testing the Co-op thing then...