It really showcases the small-world network nature of sites like Flickr. It begins with a selection of photographs tagged with a word, say "Kevin". You then have to click through to find photographs tagged with other words until you get to one tagged with another word, like "Bacon".
I defy you to come up with faster path than this one of mine, with a total of 11 clicks:
kevin > drinking > party > kitchen > breakfast > bacon