One app we didn't find - and one that brilliantly appropriates the Flickr API in a delightful, infectious user experience - is Noticings. Part game, part geotagging app, part photoblog, Noticings asks users to upload geotagged photos of interesting artifacts to Flickr. Users tag the photos "noticings;" those photos are then imported, analyzed, and scored, with extra points being awarded for those who post every day in a given week, who post photos of lost objects, or who post the first pic from a certain neighborhood. It is, as the site states, "a game of noticing the world around you."
"Many of us are moving so fast through the urban landscape we don't take in the things around us," the site reads.