flickr graph
Link: flickr graph - marcos weskamp.
Flickr Graph is an application that explores the social relationships inside flickr.com. It makes use of the classic attraction-repulsion algorithm for graphs. Start exploring your contacts by entering your flickr username or the email address you used to register there.
Flickr Graph is a flash application that uses Flickr API to draw social network graph based on flickr contacts information along with taggs and photos. Really nice interface.