Flickr delivers a new ranking mechanism. Results at Flickr Explore. A very good example of what social+technology can do — building on PageRank.
There are lots of things that make a photo ‘interesting’ (or not) in the Flickr. Where the clickthroughs are coming from; who comments on it and when; who marks it as a favorite; its tags and many more things which are constantly changing. Interestingness changes over time, as more and more fantastic photos and stories are added to Flickr.
(Via John Battelle)