Flickr is a success because it is a game?
“Why does this make flickr successful where Friendster, Orkut, et al fall flat? I believe it’s because flickr’s designers are among the first (I can’t think of others but they surely exist) who have grokked video game design and (more to the point) figured out how to translate it to the web. What does this mean? It means that, unlike say Zoto, which is just a tool for storing and sharing photos, flickr is inherently, down-to-its-bones about play.”